Burner, gas stove and integrated electrical appliance

Abstract

Disclosed in the present application are a burner, a gas stove and an integrated electrical appliance. The burner comprises a first flame outlet and a second flame outlet, wherein the first flame outlet is farther away from the center of the burner than the second flame outlet, one of the first flame outlet and the second flame outlet is adapted to eject gas and blown air therefrom, and the other of the first flame outlet and the second flame outlet is adapted to eject gas and injected air therefrom. In the technical solution, one of the first flame outlet and the second flame outlet can allow gas and blown air to be ejected therefrom, the blown air provides sufficient oxygen, such that the gas ejected from one of the first flame outlet and the second flame outlet is fully combusted, and the blown air can generate redundant oxygen to assist in the combustion of gas ejected from the other of the first flame outlet and the second flame outlet, such that the gas ejected from the other of the first flame outlet and the second flame outlet can also be fully combusted under the action of injected air and the redundant oxygen provided by the blown air. Such configuration facilitates an increase in the thermal efficiency of the gas stove.

Description

Burner, gas stove and integrated electrical appliance

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202411026557.2, filed on July 29, 2024, entitled “Burner, gas stove and integrated electrical appliance”, the Chinese patent application No. 202411026125.1, filed on July 29, 2024, entitled “Burner, gas stove and integrated electrical appliance”, the Chinese patent application No. 202421811820.4, filed on July 29, 2024, entitled “Burner, gas stove and integrated electrical appliance”, the Chinese patent application No. 202421809709.1, filed on July 29, 2024, entitled “Burner, gas stove and integrated electrical appliance”, the contents of all of the above applications are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of gas stoves, in particular to a burner, a gas stove and an integrated electrical appliance. BACKGROUND

[0004] The combustion of the burner of the gas stove requires the participation of primary air and secondary air. Generally, the primary air is mixed with the gas by the effect of injection, but the amount of primary air is affected by the structure and working conditions, and the supplement of secondary air relies on the buoyancy and the effect of entrainment, which has a high requirement for the size of the parts, so the thermal efficiency of the gas stove needs to be improved.

[0005] Practical new type content

[0006] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides a burner.

[0007] To achieve the above-mentioned purpose, according to a first aspect of the present application, a burner is disclosed, the burner comprising:

[0008] a first fire outlet; and

[0009] a second fire outlet, the first fire outlet being away from the center of the burner relative to the second fire outlet, one of the first fire outlet and the second fire outlet being adapted for the ejection of gas and blast air, the other of the first fire outlet and the second fire outlet being adapted for the ejection of gas and injection air.

[0010] One of the first fire outlet and the second fire outlet can be used for the gas and the blast air to be sprayed out, the blast air can provide sufficient oxygen for the gas sprayed out of the one to be fully combusted, and the blast air can generate excess oxygen to assist the combustion of the gas sprayed out of the other one of the first fire outlet and the second fire outlet, so that the gas sprayed out of the other one can also be fully combusted under the action of the blast air and the excess oxygen provided by the blast air, so that the gas sprayed out of the first fire outlet and the second fire outlet can be fully combusted, the combustion efficiency is high, and the heat efficiency of the gas stove is improved.

[0011] In some embodiments of the present application, the flame generated by the other one of the first fire outlet and the second fire outlet is suitable for stabilizing the flame of the one of the first fire outlet and the second fire outlet.

[0012] In some embodiments of the present application, the burner comprises a first gas outlet channel, an end of the first gas outlet channel constitutes the first fire outlet, and the first gas outlet channel is provided with at least one first corner upstream of the first fire outlet.

[0013] In some embodiments of the present application, the first gas outlet channel comprises a first upstream flow section, a first middle stream section and a first downstream flow section, an end of the first downstream flow section constitutes the first fire outlet, the first upstream flow section and the first middle stream section intersect to form the first corner, and the first middle stream section and the first downstream flow section intersect to form the first corner.

[0014] In some embodiments of the present application, the first downstream flow section is inclined away from the center of the burner from the first middle stream section.

[0015] In some embodiments of the present application, the burner comprises a second gas outlet channel, an end of the second gas outlet channel constitutes the second fire outlet, and the second gas outlet channel is provided with at least one second corner upstream of the second fire outlet.

[0016] In some embodiments of the present application, the second gas outlet channel comprises a second upstream flow section and a second downstream flow section, an end of the second downstream flow section constitutes the second fire outlet, and the second upstream flow section and the second downstream flow section intersect to form the second corner.

[0017] In some embodiments of the present application, the second downstream flow section is inclined away from the center of the burner from the second upstream flow section.

[0018] In some embodiments of the present application, the first fire outlet is in the form of a ring gap and surrounds the second fire outlet.

[0019] And / or, the second fire outlet is in the form of a ring gap.

[0020] In some embodiments of the application, the burner comprises a plurality of the first outlets, the plurality of the first outlets are arranged annularly and surround the second outlet;

[0021] In some embodiments of the application, the burner comprises a plurality of the second outlets, the plurality of the second outlets are arranged annularly.

[0022] In some embodiments of the application, the burner comprises a burner head and a burner cover arranged on the burner head, the burner head comprises a first cavity and a second cavity, the burner cover comprises a first cover, a second cover and a third cover, the first cover surrounds the second cover and a first outlet is arranged between the first cover and the second cover and communicates with the first cavity, the second cover surrounds the third cover and a second outlet is arranged between the second cover and the third cover and communicates with the second cavity.

[0023] In some embodiments of the application, a first gas outlet channel is arranged between the first cover and the second cover, and a second gas outlet channel is arranged between the second cover and the third cover.

[0024] In some embodiments of the application, the burner head comprises a first ring wall, a second ring wall and a third ring wall, the first ring wall surrounds the second ring wall and the first cavity is arranged between the first ring wall and the second ring wall, the second ring wall surrounds the third ring wall and the second cavity is arranged between the second ring wall and the third ring wall, the first cover is annular and arranged on the first ring wall, the second cover is annular and arranged on the second ring wall, and the third cover is annular and arranged on the third ring wall.

[0025] In some embodiments of the application, the burner comprises a first ejector pipe and a second ejector pipe, the first ejector pipe is connected to the burner head and communicates with the first cavity, the second ejector pipe is connected to the burner head and communicates with the second cavity, one of the gas inlet end of the first ejector pipe and the gas inlet end of the second ejector pipe is adapted to receive fuel gas and blast air, and the other of the gas inlet end of the first ejector pipe and the gas inlet end of the second ejector pipe is adapted to receive fuel gas and ejector air.

[0026] In some embodiments of the application, the burner comprises a fan, the fan is adapted to provide blast air, and the fan is fixedly connected to the first ejector pipe or the second ejector pipe.

[0027] In some embodiments of the application, the first outlet and the second outlet are arranged with a common wall, and the thickness of the wall between the first outlet and the second outlet is not greater than 6mm.

[0028] In some embodiments of the present application, the first outlet is adapted for ejection of the fuel gas and the injection air. The second outlet is adapted for ejection of the fuel gas and the blast air. The burner further comprises a third outlet adapted for ejection of the fuel gas and the injection air, and the third outlet is closer to the center of the burner relative to the second outlet.

[0029] In some embodiments of the present application, the burner comprises a burner head and a fire cover arranged on the burner head, and the fire cover is provided with the first outlet, the second outlet and the third outlet.

[0030] In some embodiments of the present application, the fire cover comprises an outer fire cover provided with the first outlet and the second outlet, an inner fire cover provided with the third outlet, and the inner fire cover is surrounded by the outer fire cover, and a middle fire cover shielding a space between the outer fire cover and the inner fire cover.

[0031] In some embodiments of the present application, the inner fire cover and the middle fire cover are fixedly connected, and / or the inner fire cover is arranged at the center of the burner, and / or the inner fire cover is a porous ceramic plate.

[0032] In some embodiments of the present application, a top surface of the middle fire cover is a plane, and / or the top surface of the middle fire cover constitutes a top surface of the fire cover, and / or the middle fire cover is adapted to be abutted by an inner wall of the outer fire cover along a radial direction of the burner.

[0033] In some embodiments of the present application, the outer fire cover comprises a first fire cover, a second fire cover and a third fire cover, the first fire cover surrounds the second fire cover and the first outlet is arranged between the first fire cover and the second fire cover, the second fire cover surrounds the third fire cover and the second outlet is arranged between the second fire cover and the third fire cover, and the middle fire cover is arranged between the third fire cover and the inner fire cover to shield the space between the outer fire cover and the inner fire cover.

[0034] In some embodiments of the present application, the middle fire cover and the third fire cover are integrally formed.

[0035] In some embodiments of the present application, the burner head is provided with a first cavity, a second cavity and a third cavity, the first outlet and the first cavity are in communication, the second outlet and the second cavity are in communication, and the third outlet and the third cavity are in communication, and the burner further comprises a first injection pipe, a second injection pipe and a third injection pipe, the first injection pipe and the first cavity are in communication and are adapted to receive the fuel gas and the injection air, the second injection pipe and the second cavity are in communication and are adapted to receive the fuel gas and the blast air, and the third injection pipe and the third cavity are in communication and are adapted to receive the fuel gas and the injection air.

[0036] In some embodiments of the present application, the first fire outlet is in the form of a ring gap surrounding the second fire outlet; and / or the second fire outlet is in the form of a ring gap surrounding the third fire outlet; and / or the third fire outlet is in the form of a ring gap.

[0037] In some embodiments of the present application, the first fire outlet is in the form of a ring gap surrounding the second fire outlet; and / or the second fire outlet is in the form of a ring gap surrounding the third fire outlet; and / or the third fire outlet is in the form of a ring gap.

[0038] A second aspect of the present application discloses a gas stove, which comprises the above-mentioned gas burner.

[0039] In some embodiments of the present application, the gas stove comprises a valve body adapted to adjust the amount of gas, when the valve body interrupts the supply of gas to the one of the first fire outlet and the second fire outlet, the valve body is adapted to maintain the supply of gas to the other of the first fire outlet and the second fire outlet, and the fan of the gas stove is in an operating state to provide the blast air.

[0040] Optionally, when the valve body interrupts the supply of gas to the second fire outlet, the valve body is adapted to maintain the supply of gas to the first fire outlet and / or the third fire outlet, and the fan of the gas stove is in an operating state to provide the blast air.

[0041] A third aspect of the present application discloses an integrated electrical appliance, which comprises the above-mentioned gas stove.

[0042] According to a fourth aspect of the present application, the present application discloses a gas burner, which comprises:

[0043] a first fire outlet adapted to eject gas and injection air;

[0044] a second fire outlet adapted to eject gas and blast air, and the second fire outlet is closer to the center of the gas burner relative to the first fire outlet; and

[0045] a third fire outlet adapted to eject gas and injection air, and the third fire outlet is closer to the center of the gas burner relative to the second fire outlet.

[0046] In some embodiments of the present application, the flame generated by the first fire outlet is adapted to stabilize the flame of the second fire outlet.

[0047] In some embodiments of the present application, the first fire outlet and the second fire outlet are co-walled, and the thickness of the wall between the first fire outlet and the second fire outlet is not greater than 6 mm.

[0048] In some embodiments of the application, the burner comprises a first gas outlet channel, an end of the first gas outlet channel constituting the first outlet port, the first gas outlet channel being provided with at least one first corner upstream of the first outlet port;

[0049] and / or, the burner comprises a second gas outlet channel, an end of the second gas outlet channel constituting the second outlet port, the second gas outlet channel being provided with at least one second corner upstream of the second outlet port.

[0050] In some embodiments of the application, the first gas outlet channel of the burner comprises a first downstream flow section, an end of the first downstream flow section constituting the first outlet port, the first downstream flow section being tilted away from or towards the center of the burner from bottom to top;

[0051] and / or, the second gas outlet channel of the burner comprises a second downstream flow section, an end of the second downstream flow section constituting the second outlet port, the second downstream flow section being tilted away from or towards the center of the burner from bottom to top.

[0052] In some embodiments of the application, the burner comprises a burner head and a fire cover provided on the burner head, the fire cover being provided with the first outlet port, the second outlet port and the third outlet port.

[0053] In some embodiments of the application, the fire cover comprises:

[0054] an outer fire cover provided with the first outlet port and the second outlet port;

[0055] an inner fire cover provided with the third outlet port, the inner fire cover being surrounded by the outer fire cover; and

[0056] a middle fire cover shielding a space between the outer fire cover and the inner fire cover.

[0057] In some embodiments of the application, the inner fire cover and the middle fire cover are connected and fixed;

[0058] and / or, the inner fire cover is provided at the center of the burner;

[0059] and / or, the inner fire cover is a porous ceramic plate.

[0060] In some embodiments of the application, a top surface of the middle fire cover is a plane;

[0061] and / or, the top surface of the middle fire cover constitutes a top surface of the fire cover;

[0062] and / or, the middle fire cover is adapted to be abutted by an inner wall of the outer fire cover along a radial direction of the burner.

[0063] In some embodiments of the present application, the outer fire cover comprises a first fire cover, a second fire cover and a third fire cover, the first fire cover surrounds the second fire cover and a first fire outlet is arranged between the first fire cover and the second fire cover, the second fire cover surrounds the third fire cover and a second fire outlet is arranged between the second fire cover and the third fire cover, and the middle fire cover is arranged between the third fire cover and the inner fire cover to shield a space between the outer fire cover and the inner fire cover.

[0064] In some embodiments of the present application, the middle fire cover and the third fire cover are integrally formed.

[0065] In some embodiments of the present application, the burner head comprises a first cavity, a second cavity and a third cavity, the first fire outlet is in communication with the first cavity, the second fire outlet is in communication with the second cavity, and the third fire outlet is in communication with the third cavity.

[0066] The burner further comprises a first ejector pipe, a second ejector pipe and a third ejector pipe, the first ejector pipe is in communication with the first cavity and is adapted to receive fuel gas and eject air, the second ejector pipe is in communication with the second cavity and is adapted to receive fuel gas and blast air, and the third ejector pipe is in communication with the third cavity and is adapted to receive fuel gas and eject air.

[0067] In some embodiments of the present application, the number of the first fire outlets is multiple, and the multiple first fire outlets are arranged in an annular manner and surround the second fire outlet.

[0068] In some embodiments of the present application, the number of the second fire outlets is multiple, and the multiple second fire outlets are arranged in an annular manner and surround the third fire outlet.

[0069] In some embodiments of the present application, the number of the third fire outlets is multiple.

[0070] In some embodiments of the present application, the first fire outlet is in the form of an annular slit and surrounds the second fire outlet.

[0071] In some embodiments of the present application, the second fire outlet is in the form of an annular slit and surrounds the third fire outlet.

[0072] In some embodiments of the present application, the third fire outlet is in the form of an annular slit.

[0073] A fifth aspect of the present application discloses a gas stove, which comprises the above-mentioned burner.

[0074] In some embodiments of the present application, the gas stove comprises a valve body adapted to adjust the amount of fuel gas, when the supply of fuel gas to the second fire outlet is interrupted in the valve body, the valve body is adapted to maintain the supply of fuel gas to the first fire outlet and / or the third fire outlet, and the fan of the gas stove is in a working state to provide blast air.

[0075] The sixth aspect of the present application discloses an integrated electrical appliance, which comprises the gas stove.

[0076] In the technical scheme of the present application, the second fire outlet is used for spraying blast air and gas, the blast air provides sufficient oxygen so that the gas sprayed from the second fire outlet can be fully combusted, the first fire outlet is used for spraying blast air and gas, the third fire outlet is used for spraying blast air and gas, the second fire outlet is arranged between the first fire outlet and the third fire outlet, when the flame generated by the first fire outlet needs secondary air, the excess oxygen generated by the blast air can be provided, when the flame generated by the third fire outlet needs secondary air, the excess oxygen generated by the blast air can also be provided, through such arrangement, the gas sprayed from the first fire outlet, the second fire outlet and the third fire outlet can be fully combusted, the combustion efficiency is high, and the thermal efficiency of the gas stove is improved.

[0077] Other advantages of the present application will be given in part in the following description, part will become obvious from the following description, or will be known by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0078] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other designs can also be obtained from the structures shown in the drawings without creative labor.

[0079] Fig. 1 is a schematic diagram of a burner in some embodiments (the first fire outlet is used for spraying blast air and gas, and the second fire outlet is used for spraying blast air and gas);

[0080] Fig. 2 is an enlarged view of the part marked as A in Fig. 1;

[0081] Fig. 3 is a schematic diagram of a burner in some embodiments (the view angle is different from that of Fig. 1, the first fire outlet is used for spraying blast air and gas, and the second fire outlet is used for spraying blast air and gas);

[0082] Fig. 4 is an enlarged view of the part marked as B in Fig. 3;

[0083] Fig. 5 is a partial structure sectional view of the burner shown in Fig. 1;

[0084] Fig. 6 is a schematic diagram of a burner in some embodiments (the first fire outlet is used for spraying blast air and gas, and the second fire outlet is used for spraying blast air and gas);

[0085] Fig. 7 is a partial structure sectional view of the burner shown in Fig. 6;

[0086] Figure 8 is an exploded view of the burner head and fire cap in some embodiments;

[0087] Figure 9 is a cross-sectional view of the burner head and fire cap assembly in some embodiments;

[0088] Figure 10 is a cross-sectional view of the burner head and fire cap assembly in some embodiments (different section than Figure 9);

[0089] Figure 11 is an enlarged view of the structure labeled C in Figure 10;

[0090] Figure 12 is a cross-sectional view of the burner head and fire cap assembly in some embodiments (different section than Figure 9, different perspective than Figure 10);

[0091] Figure 13 is an enlarged view of the structure labeled D in Figure 12;

[0092] Figure 14 is an enlarged view of the structure labeled D in Figure 12 (showing airflow direction);

[0093] Figure 15 is a schematic view of a burner in some embodiments;

[0094] Figure 16 is a cross-sectional view of the fire cap and burner head mating structure in some embodiments;

[0095] Figure 17 is a cross-sectional view of the fire cap and burner head mating structure in some embodiments (different section than Figure 16);

[0096] Figure 18 is an enlarged view of the structure labeled A in Figure 17;

[0097] Figure 19 is a schematic view of a partial structure of a burner in some embodiments (fire cap omitted);

[0098] Figure 20 is a schematic view of a partial structure of a burner in some embodiments (fire cap omitted);

[0099] Figure 21 is a schematic view of an outer fire cap in some embodiments;

[0100] Figure 22 is a cross-sectional view of the structure shown in Figure 21;

[0101] Figure 23 is an enlarged view of the structure labeled B in Figure 22 (showing airflow direction);

[0102] Figure 24 is an enlarged view of the structure labeled B in Figure 22;

[0103] Figure 25 is a schematic view of an outer fire cap in some embodiments (different structure than Figure 21);

[0104] Figure 26 is a cross-sectional view of the structure shown in Figure 25;

[0105] Figure 27 is an enlarged view of the structure labeled C in Figure 26;

[0106] Figure 28 is a schematic view of a cap and burner head mating structure according to some embodiments;

[0107] Figure 29 is a cross-sectional view of the structure of Figure 28;

[0108] Figure 30 is an enlarged view of the structure labeled D in Figure 29.

[0109] BRIEF DESCRIPTION OF DRAWINGS Burner 100, cap 1000, first cap 1110, second cap 1120, third cap 1130, first gas outlet passage 1500, first upstream flow section 1510, first midstream flow section 1520, first downstream flow section 1530, first exit port 1531, first corner 1540, second gas outlet passage 1600, second upstream flow section 1610, second downstream flow section 1620, second exit port 1621, second corner 1630, burner head 2000, first ring wall 2100, second ring wall 2200, third ring wall 2300, first cavity 2410, second cavity 2420, first injector 3100, first injector inlet end 3110, second injector 3200, second injector inlet end 3210, fan 4000, outer cap 1100, inner cap 1200, middle cap 1300, first cap body 1310, second cap body 1320, third exit port 1430, third cavity 2430, third injector 3300, third injector inlet end 3310.

[0110] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0111] In the related art, the gas stove includes a valve body. After the valve body is opened, the canned liquefied gas or pipeline natural gas is transmitted along the pipeline, the gas passes through the valve body and is sprayed through the nozzle, the gas sprayed from the nozzle is sprayed into the inside of the burner, and in the process of spraying the gas into the inside of the burner, the air is simultaneously induced. The induction of the air can be seen in the related art, which is generally based on the Venturi principle. The gas sprayed into the inside of the burner forms a negative pressure in the surrounding environment, so that the air in the surrounding environment is simultaneously induced into the inside of the burner along with the spraying of the gas (the air entering the inside of the burner through the induction is called induced air, and the induced air is primary air). The induced air and the gas are mixed in the inside of the burner and are sprayed from the inside of the burner, and then are ignited to form a flame. In the process of gas combustion, the surrounding environment will supplement air to the flame (these air is called secondary air) through buoyancy and entrainment, thereby assisting the combustion of the gas. As can be seen, the amount of primary air and the amount of secondary air are the core factors to ensure the full combustion of the sprayed gas. However, the amount of primary air is affected by the structure and working conditions, and the secondary air is supplemented by buoyancy and entrainment, which is a passive supplement, and has high requirements for the size of the parts. Therefore, the gas stove relies on the induced air and the air entrained from the surrounding environment to achieve combustion, which is mostly in a lean oxygen combustion state, the combustion is not sufficient, and the problem is solved by improving the burner, which at least improves the combustion degree of the gas to some extent, thereby improving the thermal efficiency of the gas stove.

[0112] A first aspect of the present application discloses a burner 100, as shown in FIGS. 1 to 7, the burner 100 includes a first fire outlet 1531 and a second fire outlet 1621, the first fire outlet 1531 is away from the center of the burner relative to the second fire outlet 1621, and one of the first fire outlet 1531 and the second fire outlet 1621 is used for spraying blast air and gas, and the other of the first fire outlet 1531 and the second fire outlet 1621 is used for spraying induced air and gas. One of the first fire outlet 1531 and the second fire outlet 1621 in the technical solution can spray gas and blast air, the blast air provides sufficient oxygen to make the gas sprayed by the former fully burn, and the blast air can produce excess oxygen to assist the combustion of the gas sprayed by the other of the first fire outlet 1531 and the second fire outlet 1621. In this way, the gas sprayed by the first fire outlet 1531 and the second fire outlet 1621 can also be fully burned under the action of the excess oxygen provided by the blast air and the induced air, so that the gas sprayed by the first fire outlet 1531 and the second fire outlet 1621 is fully burned, the combustion efficiency is high, and the thermal efficiency of the gas stove is improved.

[0113] Specifically, the burner 100 includes a first outlet 1531 and a second outlet 1621, one of which is used for the ejection of blast air and fuel gas, and the other of which is used for the ejection of injection air and fuel gas, including two schemes, the first scheme (shown in FIGS. 1-5) is that the first outlet 1531 is used for the ejection of blast air and fuel gas, and the second outlet 1621 is used for the ejection of injection air and fuel gas, and the second scheme (shown in FIGS. 6 and 7) is that the first outlet 1531 is used for the ejection of injection air and fuel gas, and the second outlet 1621 is used for the ejection of blast air and fuel gas.

[0114] Taking the first outlet 1531 for the ejection of blast air and fuel gas and the second outlet 1621 for the ejection of injection air and fuel gas as an example. The second outlet 1621 is used for the ejection of injection air and fuel gas, that is, the injection air and fuel gas enter the inside of the burner 100, and then are ejected from the inside of the burner 100 through the second outlet 1621, are ignited to form a flame. Similar to the above description, the supply of fuel gas can come from canned liquefied gas or pipeline natural gas, and the gas stove includes a valve body, after the valve body is opened, the fuel gas is transmitted along the fuel gas pipeline, the fuel gas flows through the valve body and is ejected through the nozzle, the fuel gas ejected from the nozzle is injected into the inside of the burner 100, and in the process of injecting the fuel gas into the inside of the burner 100, the injection of air is simultaneously realized, so that the injection air follows the fuel gas into the inside of the burner 100, and then the injection air and the fuel gas are ejected from the second outlet 1621.

[0115] The first outlet 1531 is used for the ejection of blast air and fuel gas, that is, the blast air and fuel gas enter the inside of the burner 100, and then are ejected from the inside of the burner 100 through the first outlet 1531, are ignited to form a flame. Similar to the above description, the supply of fuel gas can come from canned liquefied gas or pipeline natural gas, and the gas stove includes a valve body, after the valve body is opened, the fuel gas is transmitted along the fuel gas pipeline, the fuel gas flows through the valve body and is ejected through the nozzle, the fuel gas ejected from the nozzle is injected into the inside of the burner 100, and in the process of injecting the fuel gas into the inside of the burner 100, the injection of air is simultaneously realized, so that the injection air follows the fuel gas into the inside of the burner 100, and then the injection air and the fuel gas are ejected from the second outlet 1621.

[0116] The gas jetted out of the second gas outlet 1621 is insufficiently combusted by relying on the induced air and the ambient air. The air jetted out of the first gas outlet 1531 is blast air, which can provide sufficient oxygen. In addition to participating in the combustion of the gas jetted out of the first gas outlet 1531, the excess oxygen in the blast air can also be supplemented to the gas jetted out of the second gas outlet 1621 to assist the combustion of the gas jetted out of the second gas outlet 1621. Compared with the ambient air supplemented by the entrainment effect, the excess oxygen provided by the blast air jetted out of the first gas outlet 1531 is more actively supplemented to the gas jetted out of the second gas outlet 1621, so that the gas jetted out of the second gas outlet 1621 is fully combusted (the flame generated by the second gas outlet 1621 can still entrain ambient secondary air to participate in combustion).

[0117] Therefore, by the above scheme, the gas jetted out of the first gas outlet 1531 and the second gas outlet 1621 is fully combusted, the combustion efficiency is high, and the thermal efficiency of the gas stove is improved. It can be understood that the full combustion mentioned herein is relative to the combustion state of the air induced by the air and the ambient air (i.e., relatively more fully). Similar to the scheme "the first gas outlet 1531 is used to jet blast air and gas, and the second gas outlet 1621 is used to jet induced air and gas", the scheme "the first gas outlet 1531 is used to jet induced air and gas, and the second gas outlet 1621 is used to jet blast air and gas" has similar technical effects, which will not be repeated.

[0118] Further, the first gas outlet 1531 is farther away from the center of the burner 100 than the second gas outlet 1621. The center of the burner 100 refers to the center of the gas outlet range of the burner 100, that is, when observing the burner 100 from top to bottom, the first gas outlet 1531 is farther away from the center than the second gas outlet 1621 (the minimum distance between the first gas outlet 1531 and the center of the burner 100 is greater than the minimum distance between the second gas outlet 1621 and the center of the burner 100). It can be understood that the orientation herein is with reference to the installation of the gas stove to the use environment, and the side of the gas stove close to the ground is the bottom (bottom), and the side away from the ground is the top (top).

[0119] With reference to Figs. 1-5, the first burner port 1531 is used to emit jet air and gas, and the second burner port 1621 is used to emit blast air and gas as an example. Generally, when the gas stove is adjusted in the size of the fire, for example, the fire is adjusted from large to small, the flame is gradually extinguished from outside to inside. Since the first burner port 1531 is designed to be more outward relative to the second burner port 1621, when the fire is adjusted from large to small, the flame of the first burner port 1531 is extinguished before the second burner port 1621, that is, when the supply of gas to the first burner port 1531 is interrupted, the supply of gas to the second burner port 1621 is still maintained. At this time, blast air can still be introduced, which is emitted from the first burner port 1531 and supplemented to the gas emitted from the second burner port 1621, so that the gas emitted from the second burner port 1621 can also be fully burned in this case.

[0120] With reference to Figs. 6 and 7, the first burner port 1531 is used to emit jet air and gas, and the second burner port 1621 is used to emit blast air and gas as an example. Since the first burner port 1531 is designed to be more outward relative to the second burner port 1621, and the first burner port 1531 is used to emit jet air and gas, and the second burner port 1621 is used to emit blast air and gas, in addition to the excess oxygen emitted from the second burner port 1621 being supplemented to the gas emitted from the first burner port 1531, the flame formed by the first burner port 1531 is more likely to suck in the surrounding air, thereby further improving the effect of full combustion.

[0121] In some embodiments, the flame generated by the other of the first burner port 1531 and the second burner port 1621 is suitable for stabilizing the flame of the one of the first burner port 1531 and the second burner port 1621. The one refers to the object for emitting blast air and gas, and the other refers to the object for emitting jet air and gas. For example, the first burner port 1531 emits blast air and gas, and the second burner port 1621 emits jet air and gas, so that the one is the first burner port 1531, and the other is the second burner port 1621. For another example, the first burner port 1531 is used to emit jet air and gas, and the second burner port 1621 is used to emit blast air and gas, so that the one is the second burner port 1621, and the other is the first burner port 1531.

[0122] Specifically, taking the example of the first fire outlet 1531 for supplying the blast air and the gas to be sprayed and the second fire outlet 1621 for supplying the injection air and the gas to be sprayed, it can be understood that the scheme "the first fire outlet 1531 is used for supplying the injection air and the gas to be sprayed, and the second fire outlet 1621 is used for supplying the blast air and the gas to be sprayed" has similar technical effects, which will not be repeated. The first fire outlet 1531 sprays the blast air and the gas, and the inventor finds that although the blast air can achieve sufficient combustion of the gas, the blast air causes the gas flow rate of the first fire outlet 1531 to be large, and the speed of the gas leaving the first fire outlet 1531 is greater than the combustion speed of the gas, which is easy to cause the flame to separate. Since the second fire outlet 1621 sprays the injection air and the gas, the injection air is naturally injected by spraying the gas through the nozzle and does not need to be generated based on fluid machinery, and the speed of the gas leaving the second fire outlet 1621 is not much different from the combustion speed of the gas, which can achieve stable combustion, that is, the flame state formed by the second fire outlet 1621 is stable. Since the flame formed by the second fire outlet 1621 is more stable, the flame generated by the second fire outlet 1621 can be used to stabilize the flame of the first fire outlet 1531.

[0123] That is, the flame formed by the second fire outlet 1621 not only can heat the cooker, but also plays a role of a flame stabilizing hole / slot. In summary, since the second fire outlet 1621 supplies the injection air and the gas to be sprayed, the gas sprayed by the second fire outlet 1621 has a more stable combustion state. By adjusting the position, angle, or distance between the second fire outlet 1621 and the first fire outlet 1531, the flame formed by the second fire outlet 1621 ignites the gas sprayed by the first fire outlet 1531 (for example, the flame formed by the second fire outlet 1621 heats the root of the gas sprayed by the first fire outlet 1531 to ignite the gas sprayed by the first fire outlet 1531). When the gas quickly leaves the first fire outlet 1531, it is ignited by the flame formed by the second fire outlet 1621, so that the gas quickly leaving the first fire outlet 1531 is burned at the first fire outlet 1531, thereby suppressing the occurrence of the flame separation phenomenon of the first fire outlet 1531, stabilizing the flame of the first fire outlet 1531, and further improving the combustion efficiency. In particular, when the flames formed by the first fire outlet 1531 and the second fire outlet 1621 heat the cooker, the flames will spread outward due to the obstruction of the cooker. When the first fire outlet 1531 is farther outward relative to the second fire outlet 1621, the flame formed by the second fire outlet 1621 is more likely to contact the gas sprayed by the first fire outlet 1531 to ignite the gas sprayed by the first fire outlet 1531, thereby further improving the flame stabilizing effect on the first fire outlet 1531.

[0124] In combination with FIGS. 10-13, in some embodiments, the burner 100 includes a first gas outlet passage 1500, an end of the first gas outlet passage 1500 constituting a first gas outlet port 1531, and the first gas outlet passage 1500 is provided with at least one first corner 1540, the first corner 1540 being arranged upstream of the first gas outlet port 1531, the gas transported along the first gas outlet passage 1500 needs to flow through the first corner 1540 before being ejected from the first gas outlet port 1531, the first corner 1540 is arranged to facilitate further mixing of the gas and to facilitate deceleration of the gas, improving the uniformity and stability of the gas ejected from the first gas outlet port 1531.

[0125] Optionally, the first gas outlet passage 1500 includes a first upstream flow section 1510, a first middle flow section 1520, and a first downstream flow section 1530, the first upstream flow section 1510 intersects the first middle flow section 1520 to form the first corner 1540, the first middle flow section 1520 intersects the first downstream flow section 1530 to form the first corner 1540, and an end of the first downstream flow section 1530 constitutes the first gas outlet port 1531.

[0126] Specifically, the gas entering the interior of the burner 100 flows along the first gas outlet passage 1500 and is finally discharged from the first gas outlet port 1531, the first upstream flow section 1510 is upstream of the first middle flow section 1520, the first middle flow section 1520 is upstream of the first downstream flow section 1530, and the gas flows through the first upstream flow section 1510, the first middle flow section 1520, and the first downstream flow section 1530 in sequence and is finally discharged from the first gas outlet port 1531. In this embodiment, the first upstream flow section 1510 intersects the first middle flow section 1520 to form the first corner 1540, the gas needs to turn when flowing from the first upstream flow section 1510 to the first middle flow section 1520, the first middle flow section 1520 intersects the first downstream flow section 1530 to form the first corner 1540, and the gas also needs to turn when flowing from the first middle flow section 1520 to the first downstream flow section 1530, which facilitates further mixing of the gas and facilitates deceleration of the gas, improving the uniformity and stability of the gas ejected from the first gas outlet port 1531.

[0127] In combination with FIG. 13, in some embodiments, the first downstream flow section 1530 is inclined away from the center of the burner 100 from the first midstream flow section 1520, and the gas is inclined toward the ejection when being ejected from the first ejection port 1531, so that the ejection range is larger, and it is more conducive to heating large-sized cookers. For example, the first upstream flow section 1510 extends in the transverse direction, the first midstream flow section 1520 extends upward from the first upstream flow section 1510, and the first downstream flow section 1530 extends away from the center of the burner 100 from the first midstream flow section 1520. After entering the first gas outlet channel 1500, the gas needs to pass through two bends before being ejected from the first ejection port 1531 along the first downstream flow section 1530.

[0128] In combination with FIGS. 10-14, in some embodiments, the burner 100 includes a second gas outlet channel 1600, the end of the second gas outlet channel 1600 constitutes a second ejection port 1621, and the second gas outlet channel 1600 is provided with at least one second corner 1630, which is arranged upstream of the second ejection port 1621. The gas transported along the second gas outlet channel 1600 needs to flow through the second corner 1630 before being ejected from the second ejection port 1621. The arrangement of the second corner 1630 is conducive to further mixing and uniformity of the gas, and is conducive to the reduction of the speed of the gas, thereby improving the uniformity and stability of the gas ejected from the second ejection port 1621.

[0129] Optionally, in some embodiments, the second gas outlet channel 1600 includes a second upstream flow section 1610 and a second downstream flow section 1620, the second upstream flow section 1610 and the second downstream flow section 1620 intersect to form the second corner 1630, and the end of the second downstream flow section 1620 constitutes the second ejection port 1621.

[0130] Specifically, the gas entering the interior of the burner 100 flows along the second gas outlet channel 1600 and is finally discharged from the second ejection port 1621. The second upstream flow section 1610 is located upstream of the second downstream flow section 1620, and the gas flows through the second upstream flow section 1610 and the second downstream flow section 1620 in sequence and is finally discharged from the second ejection port 1621. In this embodiment, the second upstream flow section 1610 and the second downstream flow section 1620 intersect to form the second corner 1630. When the gas flows from the second upstream flow section 1610 to the second downstream flow section 1620, it needs to bend, which is conducive to further mixing and uniformity of the gas, and is conducive to the reduction of the speed of the gas, thereby improving the uniformity and stability of the gas ejected from the second ejection port 1621.

[0131] In combination with FIG. 13, in some embodiments, the second downstream flow section 1620 is inclined away from the center of the burner 100 from the second upstream flow section 1610, and the gas is inclined toward the ejection when being ejected from the second gas ejection port 1621, so that the ejection range is larger, and it is more conducive to heating large-size cookware. For example, the second upstream flow section 1610 extends in the vertical direction, and the second downstream flow section 1620 extends away from the center of the burner 100 from the second upstream flow section 1610, and the gas needs to pass through a secondary bend after entering the second gas ejection passage 1600 and then be ejected from the second gas ejection port 1621 along the second downstream flow section 1620.

[0132] In combination with FIGS. 1-4, in some embodiments, the first gas ejection port 1531 is in the shape of a ring gap, the ring gap-shaped first gas ejection port 1531 can achieve large-range heating of the cookware, and the ring gap shape also means that the first gas ejection port 1531 is continuous along the circumferential direction of the burner 100, which can be understood as the direction around the center of the burner 100. When the blast air and the gas are ejected from the first gas ejection port 1531, the excess oxygen in the gas ejected from the first gas ejection port 1531 can increase the contact with the gas ejected from the second gas ejection port 1621, and improve the oxygen supplement effect on the gas ejected from the second gas ejection port 1621. In addition to the above, in some embodiments, the burner 100 includes a plurality of first gas ejection ports 1531, a plurality means two or more, that is, the number of first gas ejection ports 1531 is at least two, and the plurality of first gas ejection ports 1531 are arranged in a ring shape and are arranged alternately, for example, the plurality of first gas ejection ports 1531 are arranged in a ring shape and are arranged alternately along the circumferential direction of the burner 100, and the plurality of first gas ejection ports 1531 eject gas to generate a flame, which can also achieve large-range heating of the cookware.

[0133] In combination with FIGS. 1-4, in some embodiments, the second gas ejection port 1621 is in the shape of a ring gap, the ring gap-shaped second gas ejection port 1621 can achieve large-range heating of the cookware, and the ring gap-shaped second gas ejection port 1621 is continuous along the circumferential direction of the burner 100, and when the blast air and the gas are ejected from the second gas ejection port 1621, the excess oxygen in the gas ejected from the second gas ejection port 1621 can increase the contact with the gas ejected from the first gas ejection port 1531, and improve the oxygen supplement effect on the gas ejected from the first gas ejection port 1531. In addition to the above, in some embodiments, the burner 100 includes a plurality of second gas ejection ports 1621, a plurality means two or more, that is, the number of second gas ejection ports 1621 is at least two, and the plurality of second gas ejection ports 1621 are arranged in a ring shape and are arranged alternately, for example, the plurality of second gas ejection ports 1621 are arranged in a ring shape and are arranged alternately along the circumferential direction of the burner 100, which can be understood as the direction around the center of the burner 100, and the plurality of second gas ejection ports 1621 eject gas to generate a flame, which can also achieve large-range heating of the cookware.

[0134] Since the first fire outlets 1531 are more outward, when the first fire outlets 1531 are ring slits, the first fire outlets 1531 surround the second fire outlets 1621 (at this time, the second fire outlets 1621 can be multiple or ring slits), and when the number of the first fire outlets 1531 is multiple, the multiple first fire outlets 1531 surround the second fire outlets 1621 (at this time, the second fire outlets 1621 can be multiple or ring slits). For example, as shown in FIG. 1, the first fire outlets 1531 are ring slits and surround the second fire outlets 1621 which are ring slits.

[0135] In combination with FIGS. 8-11, in some embodiments, the burner 100 comprises a burner head 2000 and a burner cap 1000, the burner head 2000 is provided with a first cavity 2410 and a second cavity 2420, the burner cap 1000 is arranged on the burner head 2000 to cover the first cavity 2410 and the second cavity 2420, the burner cap 1000 is provided with first fire outlets 1531 and second fire outlets 1621, the first fire outlets 1531 communicate with the first cavity 2410, and the second fire outlets 1621 communicate with the second cavity 2420.

[0136] Specifically, the burner head 2000 can be integrally formed or can be composed of separate parts connected and assembled by connecting means, the first cavity 2410 surrounds the second cavity 2420, the first fire outlets 1531 communicate with the first cavity 2410, and the second fire outlets 1621 communicate with the second cavity 2420.

[0137] When the first fire outlets 1531 supply blast air and gas for ejection and the second fire outlets 1621 supply injection air and gas for ejection, the blast air and gas are mixed in the first cavity 2410 and then ejected from the first fire outlets 1531 to be ignited to form a flame, and the injection air and gas are mixed in the second cavity 2420 and then ejected from the second fire outlets 1621 to be ignited to form a flame.

[0138] When the first fire outlets 1531 supply injection air and gas for ejection and the second fire outlets 1621 supply blast air and gas for ejection, the injection air and gas are mixed in the first cavity 2410 and then ejected from the first fire outlets 1531 to be ignited to form a flame, and the blast air and gas are mixed in the second cavity 2420 and then ejected from the second fire outlets 1621 to be ignited to form a flame.

[0139] Continuing to refer to FIGS. 8-11, in some embodiments, the fire cap 1000 includes a first fire cap 1110, a second fire cap 1120, and a third fire cap 1130, the first fire cap 1110 surrounds the second fire cap 1120, the second fire cap 1120 surrounds the third fire cap 1130, a first fire exit 1531 is provided between the first fire cap 1110 and the second fire cap 1120, and a second fire exit 1621 is provided between the second fire cap 1120 and the third fire cap 1130, such that the first fire exit 1531 is distanced from the center of the burner 100 relative to the second fire exit 1621. As such, the first fire exit 1531 and the second fire exit 1621 are co-walled, such that the first fire exit 1531 and the second fire exit 1621 are adjacent, and it is easier to achieve flame stabilization of the other of the first fire exit 1531 and the second fire exit 1621 to the other, further improving the flame stabilization effect.

[0140] Further, referring to FIGS. 8-13, in some embodiments, a first gas exit channel 1500 is provided between the first fire cap 1110 and the second fire cap 1120, and a second gas exit channel 1600 is provided between the second fire cap 1120 and the third fire cap 1130, since the first fire cap 1110 surrounds the second fire cap 1120, and the second fire cap 1120 surrounds the third fire cap 1130, the first fire cap 1110 and the second fire cap 1120 can be designed to be spaced apart (i.e., not in contact), and the second fire cap 1120 and the third fire cap 1130 can be designed to be spaced apart (i.e., not in contact), such that the first gas exit channel 1500 forms a continuous annular space, and the second gas exit channel 1600 also forms a continuous annular space, facilitating assembly of the fire cap 1000 (see below for details).

[0141] Referring to FIGS. 8-11, in some embodiments, the burner head 2000 includes a first ring wall 2100, a second ring wall 2200, and a third ring wall 2300, the first ring wall 2100 surrounds the second ring wall 2200, the second ring wall 2200 surrounds the third ring wall 2300, a first cavity 2410 is provided between the first ring wall 2100 and the second ring wall 2200, and a second cavity 2420 is provided between the second ring wall 2200 and the third ring wall 2300, the first fire cap 1110 is annular, the second fire cap 1120 is annular, and the third fire cap 1130 is annular, the first fire cap 1110 is placed on the first ring wall 2100 and thus supported on the first ring wall 2100 under the action of gravity, the second fire cap 1120 is placed on the second ring wall 2200 and thus supported on the second ring wall 2200 under the action of gravity, and the third fire cap 1130 is placed on the third ring wall 2300 and thus supported on the third ring wall 2300 under the action of gravity, such that assembly of the fire cap 1000 and the burner head 2000 is facilitated.

[0142] In some embodiments, as shown in Figs. 1 to 7, the burner 100 comprises a first draft tube 3100 connected to the burner head 2000 so as to communicate with the first volume 2410 and a second draft tube 3200 connected to the burner head 2000 so as to communicate with the second volume 2420. One of the air inlet ends 3110 of the first draft tube 3100 and the air inlet end 3210 of the second draft tube 3200 is fitted with the nozzle and receives the blast air, and the other of the air inlet ends 3110 of the first draft tube 3100 and the air inlet end 3210 of the second draft tube 3200 is fitted with the nozzle.

[0143] In particular, the first draft tube 3100 and the second draft tube 3200 have a Venturi structure.

[0144] In the case that the air inlet end 3110 of the first draft tube 3100 is fitted with the nozzle and receives the blast air and the air inlet end 3210 of the second draft tube 3200 is fitted with the nozzle, the nozzle is aimed at the air inlet end 3110 of the first draft tube 3100 to inject the gas, while the blast air enters through the air inlet end 3110 of the first draft tube 3100, for example, by forced blast by the fan 4000, and the blast air mixes with the gas to be delivered to the first volume 2410 and is finally ejected from the first outlet port 1531. It can be understood that the fan 4000 can be fixedly connected to the first draft tube 3100, which is more convenient for the fan 4000 to be fitted with the air inlet end 3110 of the first draft tube 3100. In the case that the air inlet end 3210 of the second draft tube 3200 is fitted with the nozzle, the nozzle is aimed at the air inlet end 3210 of the second draft tube 3200 to inject the gas, while a negative pressure is formed around the environment to induce the air, the induced air mixes with the gas to be delivered to the second volume 2420 and is finally ejected from the second outlet port 1621.

[0145] In the case that the air inlet end 3110 of the first draft tube 3100 is fitted with the nozzle and receives the blast air and the air inlet end 3210 of the second draft tube 3200 is fitted with the nozzle, the nozzle is aimed at the air inlet end 3110 of the first draft tube 3100 to inject the gas, while a negative pressure is formed around the environment to induce the air, the induced air mixes with the gas to be delivered to the first volume 2410 and is finally ejected from the first outlet port 1531. The nozzle is aimed at the air inlet end 3210 of the second draft tube 3200 to inject the gas, while the blast air enters through the air inlet end 3210 of the second draft tube 3200, for example, by forced blast by the fan 4000, and the blast air mixes with the gas to be delivered to the second volume 2420 and is finally ejected from the second outlet port 1621. It can be understood that the fan 4000 can be fixedly connected to the second draft tube 3200, which is more convenient for the fan 4000 to be fitted with the air inlet end 3210 of the second draft tube 3200.

[0146] In some embodiments, as shown in FIGS. 15-18, the burner 100 includes a first outlet 1531 for injecting the air and the gas, a second outlet 1621 for injecting the air and the gas, and a third outlet 1430 for injecting the air and the gas, the second outlet 1621 is closer to the center of the burner 100 than the first outlet 1531, and the third outlet 1430 is closer to the center of the burner 100 than the second outlet 1621.

[0147] The second outlet 1621 is used to inject the air and the gas, the air provides sufficient oxygen so that the gas injected by the second outlet 1621 can be fully combusted, the first outlet 1531 is used to inject the air and the gas, the third outlet 1430 is used to inject the air and the gas, and the second outlet 1621 is arranged between the first outlet 1531 and the third outlet 1430. When the flame generated by the first outlet 1531 needs secondary air, the excess oxygen generated by the air can be provided, and when the flame generated by the third outlet 1430 needs secondary air, the excess oxygen generated by the air can also be provided. By such an arrangement, the gas injected by the first outlet 1531, the second outlet 1621, and the third outlet 1430 is fully combusted, the combustion efficiency is high, and it is beneficial to further improve the thermal efficiency of the gas stove.

[0148] In some embodiments, as shown in FIG. 18, the first outlet 1531 and the second outlet 1621 are arranged in a common wall, and the thickness of the wall between the first outlet 1531 and the second outlet 1621 is not greater than 6 mm, for example, the thickness of the wall between the first outlet 1531 and the second outlet 1621 is 0.2 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, or 6 mm. By such an arrangement, the first outlet 1531 and the second outlet 1621 are as close as possible, further improving the flame stabilizing effect of the flame generated by the first outlet 1531 on the second outlet 1621.

[0149] In some embodiments, as shown in FIGS. 15-20, the burner 100 includes a burner head 2000 and a burner cap 1000, the burner cap 1000 is arranged on the burner head 2000 to jointly enclose an internal space with the burner head 2000, the first outlet 1531, the second outlet 1621, and the third outlet 1430 are arranged on the burner cap 1000, the first outlet 1531 communicates with the internal space, the second outlet 1621 communicates with the internal space, and the third outlet 1430 communicates with the internal space.

[0150] For example, the furnace head 2000 is provided with a first cavity 2410, a second cavity 2420 and a third cavity 2430, and the fire cap 1000 is arranged to enclose the first cavity 2410, the second cavity 2420 and the third cavity 2430 respectively when the fire cap 1000 is arranged on the furnace head 2000. The first outlet 1531 is in communication with the first cavity 2410, and the injection air and the fuel gas enter the first cavity 2410 and are sprayed out through the first outlet 1531. The second outlet 1621 is in communication with the second cavity 2420, and the blast air and the fuel gas enter the second cavity 2420 and are sprayed out through the second outlet 1621. The third outlet 1430 is in communication with the third cavity 2430, and the injection air and the fuel gas enter the third cavity 2430 and are sprayed out through the third outlet 1430.

[0151] In combination with FIGS. 19 and 20, in some embodiments, the burner 100 further comprises a first injection pipe 3100, a second injection pipe 3200 and a third injection pipe 3300. The first injection pipe 3100 is in communication with the first cavity 2410, and the first injection pipe 3100 is used to receive the injection air and the fuel gas. The second injection pipe 3200 is in communication with the second cavity 2420, and the second injection pipe 3200 is used to receive the blast air and the fuel gas. The third injection pipe 3300 is in communication with the third cavity 2430, and the third injection pipe 3300 is used to receive the injection air and the fuel gas.

[0152] Specifically, the first injection pipe 3100 has a Venturi structure, and the first injection pipe 3100 is connected with the furnace head 2000 so that the first injection pipe 3100 is in communication with the first cavity 2410. The air inlet end 3110 of the first injection pipe 3100 is matched with a nozzle, and the nozzle sprays the fuel gas towards the air inlet end 3110 of the first injection pipe 3100. At the same time, the surrounding environment forms a negative pressure to inject air. The injection air and the fuel gas are transported to the first cavity 2410 for mixing, and finally sprayed out from the first outlet 1531.

[0153] The second injection pipe 3200 has a Venturi structure, and the second injection pipe 3200 is connected with the furnace head 2000 so that the second injection pipe 3200 is in communication with the second cavity 2420. The air inlet end 3210 of the second injection pipe 3200 is matched with a nozzle, and the nozzle sprays the fuel gas towards the air inlet end 3210 of the second injection pipe 3200. At the same time, the blast air enters the air inlet end 3210 of the second injection pipe 3200, for example, by forced blast air through the fan 4000. The blast air and the fuel gas are transported to the second cavity 2420 for mixing, and finally sprayed out from the second outlet 1621. The fan 4000 can be connected and fixed with the second injection pipe 3200, which is more convenient for the cooperation of the fan 4000 and the air inlet end 3210 of the second injection pipe 3200.

[0154] The third ejector pipe 3300 has a Venturi structure, the third ejector pipe 3300 is connected with the furnace head 2000 so that the third ejector pipe 3300 and the third cavity 2430 are communicated, the gas inlet end 3310 of the third ejector pipe 3300 is matched with the nozzle, the nozzle sprays the gas to the gas inlet end 3310 of the third ejector pipe 3300, at the same time, the negative pressure is formed to the surrounding environment so as to eject the air, the ejected air is mixed with the gas to be delivered to the third cavity 2430, and finally the mixed gas is sprayed out of the third fire outlet 1430.

[0155] By supplying the gas through the first ejector pipe 3100, the second ejector pipe 3200 and the third ejector pipe 3300 respectively, when the gas stove is in the minimum fire state, the flame can be formed only through the third fire outlet 1430.

[0156] In combination with FIGS. 17 and 18, in some embodiments, the fire cover 1000 comprises an outer fire cover 1100, an inner fire cover 1200 and a middle fire cover 1300, the outer fire cover 1100 is provided with the first fire outlet 1531 and the second fire outlet 1621, the inner fire cover 1200 is provided with the third fire outlet 1430, the outer fire cover 1100 surrounds the inner fire cover 1200, and the middle fire cover 1300 shields the space between the outer fire cover 1100 and the inner fire cover 1200.

[0157] In combination with FIG. 18, in some embodiments, the inner fire cover 1200 and the middle fire cover 1300 are connected and fixed, so that the inner fire cover 1200 and the middle fire cover 1300 constitute an independent module and can be disassembled synchronously. For example, the middle fire cover 1300 comprises a first cover body 1310 and a second cover body 1320, the first cover body 1310 extends along the vertical direction and surrounds the inner fire cover 1200, the first cover body 1310 and the inner fire cover 1200 are connected and fixed, and the second cover body 1320 is arranged at the top of the first cover body 1310 and extends towards the outer fire cover 1100 so as to shield the space between the outer fire cover 1100 and the inner fire cover 1200.

[0158] In combination with FIGS. 15 to 17, in some embodiments, the inner fire cover 1200 is arranged at the center of the burner 100, that is, the flame generated by the inner fire cover 1200 is at the center of the fire outlet range, so that it is more conducive to the gas stove in the minimum fire cooking state. For example, the inner fire cover 1200 covers the center of the burner 100.

[0159] Further, the inner fire cover 1200 is a porous ceramic plate, the porous structure makes the inner fire cover 1200 form a plurality of third fire outlets 1430, by designing the inner fire cover 1200 as a porous ceramic plate, the inner fire cover 1200 forms infrared combustion (constitutes an infrared combustion fire cover), which is conducive to achieving minimum fire combustion, and its fire hole thermal intensity is small, can realize full premixed combustion, reduce the demand for secondary air, and even do not need to supplement secondary air (i.e. without absorbing ambient air and without the need for excess oxygen sprayed by the second fire outlet 1621), for example, the porous ceramic plate is mainly prepared by infrared ceramic material.

[0160] In combination with FIGS. 15-17, in some embodiments, the top surface of the middle fire cover 1300 is designed as a plane, since the middle fire cover 1300 blocks the space between the outer fire cover 1100 and the inner fire cover 1200, when the top surface of the middle fire cover 1300 is a plane, it will further improve the integrity of the fire cover 1000, and it is easier to clean, especially when the top surface of the middle fire cover 1300 constitutes the top surface of the fire cover 1000, when wiping the top surface of the fire cover 1000, the user's wiping action is more smooth and not easily hindered, for example, the top surface of the middle fire cover 1300 in FIG. 15 is a horizontal plane.

[0161] Further, in combination with FIGS. 17 and 18, along the radial direction of the burner 100, the middle fire cover 1300 is adapted to be abutted by the inner wall of the outer fire cover 1100. Generally, the middle fire cover 1300 is supported by the burner head 2000 in the direction of gravity, by being abutted by the inner wall of the outer fire cover 1100 along the radial direction of the burner 100, so that the middle fire cover 1300 is limited in two directions, and the middle fire cover 1300 is more stable. It can be understood that when the gas stove is in a use environment, the up-down direction is the axial direction, the direction of gravity is along the axial direction from top to bottom, and the radial direction is perpendicular to the axial direction.

[0162] In combination with FIGS. 15-18, in some embodiments, the outer fire cover 1100 includes a first fire cover 1110, a second fire cover 1120, and a third fire cover 1130, the first fire cover 1110 surrounds the second fire cover 1120, and the first fire cover 1110 and the second fire cover 1120 form a first fire outlet 1531, the second fire cover 1120 surrounds the third fire cover 1130, and the second fire cover 1120 and the third fire cover 1130 are provided with a second fire outlet 1621, the middle fire cover 1300 is arranged between the third fire cover 1130 and the inner fire cover 1200 to block the space between the outer fire cover 1100 and the inner fire cover 1200, so that the first fire outlet 1531, the second fire outlet 1621, and the third fire outlet 1430 are arranged in sequence from outside to inside.

[0163] It can be understood that the middle fire cover 1300 and the outer fire cover 1100 can be separate components, or at least part of the middle fire cover 1300 and the outer fire cover 1100 can be integrally formed. The middle fire cover 1300 and the inner fire cover 1200 can be separate components, or at least part of the middle fire cover 1300 and the inner fire cover 1200 can be integrally formed. For example, as shown in FIGS. 15-18, the middle fire cover 1300, the outer fire cover 1100, and the inner fire cover 1200 are separate components and are assembled together. As shown in FIGS. 28-30, the middle fire cover 1300 and the third fire cover 1130 are integrally formed (i.e., the same component includes the middle fire cover 1300 and the third fire cover 1130), and the middle fire cover 1300 and the inner fire cover 1200 are separate components.

[0164] In some embodiments, the number of the first fire outlets 1531 is multiple, which means two or more, i.e., the number of the first fire outlets 1531 is at least two. The multiple first fire outlets 1531 are arranged in a ring shape and are arranged alternately, for example, the multiple first fire outlets 1531 are arranged in a ring shape along the circumference of the burner 100. The circumference can be understood as the direction around the center of the burner 100. The multiple first fire outlets 1531 spray gas to generate a flame, which can achieve large-scale heating of the cooker. In addition to the above, as shown in FIGS. 17 and 18, in some embodiments, the first fire outlet 1531 is in a ring slit shape, and the ring slit-shaped first fire outlet 1531 can also achieve large-scale heating of the cooker.

[0165] In some embodiments, the number of the second fire outlets 1621 is multiple, which means two or more, i.e., the number of the second fire outlets 1621 is at least two. The multiple second fire outlets 1621 are arranged in a ring shape and are arranged alternately, for example, the multiple second fire outlets 1621 are arranged in a ring shape along the circumference of the burner 100. The circumference can be understood as the direction around the center of the burner 100. The multiple second fire outlets 1621 spray gas to generate a flame, which can achieve large-scale heating of the cooker. In addition to the above, as shown in FIGS. 17 and 18, in some embodiments, the second fire outlet 1621 is in a ring slit shape, and the ring slit-shaped second fire outlet 1621 can also achieve large-scale heating of the cooker. When the second fire outlet 1621 is designed in a ring slit shape, the second fire outlet 1621 is continuous along the circumference of the burner 100, so that the excess oxygen in the gas sprayed by the second fire outlet 1621 can increase the contact with the gas sprayed by the first fire outlet 1531 or the third fire outlet 1430, further improving the oxygen supplement effect.

[0166] In combination with FIGS. 17 and 18, in some embodiments, the third fire exit 1430 is multiple, meaning two or more, i.e., the number of the third fire exit 1430 is at least two, and the multiple third fire exits 1430 are arranged in a ring shape or densely arranged. In addition to the above, in some embodiments, the third fire exit 1430 is in a ring slit shape.

[0167] Since the first fire exit 1531 is away from the center of the burner 100 relative to the second fire exit 1621, when the first fire exit 1531 includes multiple and is arranged in a ring shape, the multiple first fire exits 1531 surround the second fire exit 1621 (which can be multiple or in a ring slit shape), and when the first fire exit 1531 is in a ring slit shape, the ring slit-shaped first fire exit 1531 surrounds the second fire exit 1621 (which can be multiple or in a ring slit shape). Since the second fire exit 1621 is away from the center of the burner 100 relative to the third fire exit 1430, when the second fire exit 1621 includes multiple and is arranged in a ring shape, the multiple second fire exits 1621 surround the third fire exit 1430 (which can be multiple or in a ring slit shape), and when the second fire exit 1621 is in a ring slit shape, the ring slit-shaped second fire exit 1621 surrounds the third fire exit 1430 (which can be multiple or in a ring slit shape).

[0168] The embodiments of the present application also disclose a gas stove, which is shown in combination with FIGS. 1 to 30 and comprises the above-mentioned burner 100. The burner 100 comprises a first fire exit 1531 and a second fire exit 1621, the first fire exit 1531 is away from the center of the burner relative to the second fire exit 1621, and one of the first fire exit 1531 and the second fire exit 1621 is used for ejecting the blast air and the gas, and the other of the first fire exit 1531 and the second fire exit 1621 is used for ejecting the injection air and the gas. In the technical solution, one of the first fire exit 1531 and the second fire exit 1621 can be used for ejecting the gas and the blast air, the blast air provides sufficient oxygen to make the gas ejected by the aforementioned one fully burn, and the blast air can generate excess oxygen to assist the combustion of the gas ejected by the other of the first fire exit 1531 and the second fire exit 1621, so that the gas ejected by the aforementioned other can also fully burn under the action of the injection air and the excess oxygen provided by the blast air. Through such an arrangement, the gas ejected by the first fire exit 1531 and the second fire exit 1621 can be fully burned, the combustion efficiency is high, and the thermal efficiency of the gas stove is improved.

[0169] Optionally, when the valve body interrupts the gas supply of the second fire outlet 1621, the valve body is adapted to maintain the gas supply of the first fire outlet 1531 and / or the third fire outlet 1430, and the fan 4000 of the gas stove is in working condition to provide blast air. When the flame generated by the first fire outlet 1531 in the technical solution needs secondary air, the excess oxygen generated by the blast air can be provided, and when the flame generated by the third fire outlet 1430 needs secondary air, the excess oxygen generated by the blast air can also be provided. By such arrangement, the gas ejected from the first fire outlet 1531, the second fire outlet 1621 and the third fire outlet 1430 is fully burned, the combustion efficiency is high, and it is beneficial to further improve the thermal efficiency of the gas stove.

[0170] In some embodiments, the gas stove comprises a valve body (not shown in the figure) for adjusting the amount of gas. When the valve body interrupts the gas supply of the one of the first fire outlet 1531 and the second fire outlet 1621, the valve body can maintain the gas supply of the other of the first fire outlet 1531 and the second fire outlet 1621, and at this time the fan 4000 is also in working condition.

[0171] Specifically, taking the first fire outlet 1531 as the one (for blast air and gas ejection) and the second fire outlet 1621 as the other (for jet air and gas ejection) as an example. The valve body is a device for adjusting the flow of gas, the inlet of the valve body is connected to the gas pipeline, and the outlet of the valve body is connected to the nozzle. By the adjusting action of the valve body, the amount of gas finally passing to the first fire outlet 1531 and the second fire outlet 1621 is adjusted. The specific structure of the valve body can be referred to the related technology, which will not be described in detail here. When the adjusting valve is adjusted to interrupt the gas supply of the first fire outlet 1531, the gas supply of the second fire outlet 1621 can still be maintained, and at this time the fan 4000 is also in working condition. In this way, the air (blast air) forced by the fan 4000 is ejected through the first fire outlet 1531 to supplement the gas ejected from the second fire outlet 1621, ensuring that the gas ejected from the second fire outlet 1621 can also be fully burned when no gas is ejected through the first fire outlet 1531.

[0172] It can be understood that the fan 4000 can be started simultaneously when the gas stove is ignited. Regardless of how the valve body is adjusted, the fan 4000 remains in the running state until the gas stove is extinguished, and then the fan 4000 is turned off. Of course, other control logics can also be used, which will not be described here.

[0173] The embodiment of the present application also discloses an integrated electric appliance, which comprises the gas stove of the above-mentioned embodiment. The so-called integrated electric appliance is a device integrating a gas stove and another conventional electric appliance function, for example, the integrated electric appliance can integrate at least one of a microwave oven, an oven, a steamer and a smoke machine together with the gas stove. Of course, the integrated electric appliance is not limited to the above-mentioned electric appliances, as long as the integrated electric appliance can realize more functions than the gas stove alone. It can be understood that the gas stove of the integrated electric appliance of the embodiment adopts the technical scheme of the above-mentioned embodiment, and therefore has at least the beneficial effects brought by the technical scheme of the above-mentioned embodiment, which will not be repeated here.

[0174] In addition, the combustion of the burner of the gas stove needs to be supplemented with secondary air under the condition of insufficient primary air. Generally, the secondary air is supplemented to the flame from the surrounding environment by buoyancy and entrainment. This mode has high requirements for the size of parts, and therefore the thermal efficiency of the gas stove needs to be improved.

[0175] The second aspect of the present application discloses a burner 100, as shown in FIGS. 15-18, in some embodiments, the burner 100 comprises a first fire outlet 1531, a second fire outlet 1621 and a third fire outlet 1430, the first fire outlet 1531 is used for ejecting air and gas, the second fire outlet 1621 is used for ejecting air and gas, the third fire outlet 1430 is used for ejecting air and gas, and the second fire outlet 1621 is closer to the center of the burner 100 than the first fire outlet 1531, and the third fire outlet 1430 is closer to the center of the burner 100 than the second fire outlet 1621.

[0176] The second fire outlet 1621 is used for ejecting air and gas, and the air provides sufficient oxygen so that the gas ejected from the second fire outlet 1621 can be fully burned. The first fire outlet 1531 is used for ejecting air and gas, and the third fire outlet 1430 is used for ejecting air and gas. The second fire outlet 1621 is arranged between the first fire outlet 1531 and the third fire outlet 1430. When the flame generated by the first fire outlet 1531 needs secondary air, the excess oxygen generated by the air can be provided. When the flame generated by the third fire outlet 1430 needs secondary air, the excess oxygen generated by the air can also be provided. In this way, the gas ejected from the first fire outlet 1531, the second fire outlet 1621 and the third fire outlet 1430 can be fully burned, the combustion efficiency is high, and the thermal efficiency of the gas stove is improved.

[0177] Specifically, the second outlet 1621 is closer to the center of the burner 100 than the first outlet 1531, and the third outlet 1430 is closer to the center of the burner 100 than the second outlet 1621. The center of the burner 100 refers to the center of the flame range of the burner 100, i.e., when the burner 100 is viewed from top to bottom, the first outlet 1531 is farther out than the second outlet 1621 and the third outlet 1430, the third outlet 1430 is closer in than the first outlet 1531 and the second outlet 1621, and the second outlet 1621 is between the first outlet 1531 and the third outlet 1430. In this way, the third outlet 1430, the second outlet 1621, and the first outlet 1531 are arranged in sequence in a direction away from the center of the burner 100 (the minimum distance between the first outlet 1531 and the center of the burner 100 is greater than the minimum distance between the second outlet 1621 and the center of the burner 100, and the minimum distance between the second outlet 1621 and the center of the burner 100 is greater than the minimum distance between the third outlet 1430 and the center of the burner 100). In some cases, the third outlet 1430 can be exactly at the center of the burner 100, which is more conducive to uniform temperature distribution.

[0178] The second outlet 1621 is used for the ejection of blast air and fuel gas. The blast air and the fuel gas enter the interior of the burner 100 and are then ejected from the interior of the burner 100 through the second outlet 1621 and ignited to form a flame. The fuel gas can be supplied from a canned liquefied gas or a pipeline natural gas. The gas stove includes a valve body. After the valve body is opened, the fuel gas is transmitted along a gas pipeline. The fuel gas flows through the valve body and is ejected through a nozzle. The fuel gas ejected from the nozzle is injected into the interior of the burner 100. In this process, blast air is provided. The blast air is generated by a fluid machine, such as a blower 4000, and is forced to provide blast air. The blast air enters the interior of the burner 100 and mixes with the fuel gas (the blast air is primary air), and then the blast air and the fuel gas are ejected from the second outlet 1621. Compared with the ejecting air, the blast air can provide more oxygen, so that the fuel gas ejected from the second outlet 1621 can be in a rich oxygen combustion state, thereby ensuring the complete combustion of the fuel gas ejected from the second outlet 1621 (the flame generated by the second outlet 1621 can still suck in ambient secondary air to participate in combustion).

[0179] The first fire outlet 1531 is used for the ejection of the air and gas, the air and gas enter the inside of the burner 100, and then are ejected from the inside of the burner 100 through the first fire outlet 1531, and are ignited to form a flame. The supply of the gas can be from a canned liquefied gas or a pipeline natural gas, and the gas stove comprises a valve body, after the valve body is opened, the gas is transmitted along a gas pipeline, the gas flows through the valve body and is ejected through a nozzle, the gas ejected from the nozzle is ejected into the inside of the burner 100, and in the process of the gas being ejected into the inside of the burner 100, the air is synchronously ejected, the ejection of the air can be referred to the related art, which is generally based on the Venturi principle, the gas is ejected into the inside of the burner 100 to form a negative pressure in the surrounding environment, so that the air in the surrounding environment is synchronously ejected into the inside of the burner 100 along with the ejection of the gas (the air entering the inside of the burner 100 through the ejection is referred to as the ejection air, and the ejection air is primary air), the ejection air and the gas are mixed in the inside of the burner 100 and are ejected from the first fire outlet 1531, and then are ignited to form a flame. When the ejection air ejected from the first fire outlet 1531 is not enough to support the combustion of the gas ejected from the first fire outlet 1531, the secondary air needs to be supplemented, since the air ejected from the second fire outlet 1621 is blast air, the blast air ejected from the second fire outlet 1621 can provide enough oxygen, so that the blast air ejected from the second fire outlet 1621 can provide the excess oxygen to the gas ejected from the first fire outlet 1531 in addition to participating in the combustion of the gas ejected from the second fire outlet 1621, and assist the combustion of the gas ejected from the first fire outlet 1531, compared with the secondary air supplemented from the surrounding environment by the entrainment action, the excess oxygen provided by the blast air ejected from the second fire outlet 1621 is more actively supplemented into the gas ejected from the first fire outlet 1531, through such a setting, the gas ejected from the first fire outlet 1531 is fully combusted (in this case, the flame generated by the first fire outlet 1531 can still entrain the secondary air from the surrounding environment to participate in the combustion).

[0180] Similarly, the third fire outlet 1430 is used for the ejection of the air and gas, the air and gas enter the inside of the burner 100, and then are ejected from the inside of the burner 100 through the third fire outlet 1430 and ignited to form a flame. The gas can be supplied from a canned liquefied gas or a pipeline natural gas, and the gas stove comprises a valve body, after the valve body is opened, the gas is transmitted along the gas pipeline, the gas flows through the valve body and is ejected through the nozzle, the gas ejected from the nozzle is ejected into the inside of the burner 100, and in the process of the gas being ejected into the inside of the burner 100, the air is simultaneously ejected, the air and the gas enter the inside of the burner 100 and are ejected from the third fire outlet 1430 after being mixed, and then are ignited to form a flame. When the air ejected from the third fire outlet 1430 is not enough to support the combustion of the gas ejected from the third fire outlet 1430, secondary air needs to be supplemented. Since the air ejected from the second fire outlet 1621 is blast air, the blast air ejected from the second fire outlet 1621 can provide sufficient oxygen, so that the blast air ejected from the second fire outlet 1621 can provide excess oxygen to the gas ejected from the third fire outlet 1430 in addition to participating in the combustion of the gas ejected from the second fire outlet 1621, to assist the combustion of the gas ejected from the third fire outlet 1430. Compared with the secondary air supplemented from the surrounding environment by entrainment, the excess oxygen provided by the blast air ejected from the second fire outlet 1621 is more actively supplemented into the gas ejected from the third fire outlet 1430. Through such a design, the gas ejected from the third fire outlet 1430 is fully combusted (in this case, the flame generated by the third fire outlet 1430 can still entrain secondary air from the surrounding environment to participate in combustion).

[0181] Through the above scheme, the gas ejected from the first fire outlet 1531, the second fire outlet 1621 and the third fire outlet 1430 is fully combusted, the combustion efficiency is high, and the thermal efficiency of the gas stove is improved. It can be understood that the full combustion mentioned herein is relative to the combustion state of the air ejected by the air and the air entrained from the surrounding environment (i.e. relatively more fully).

[0182] In some embodiments, the flame generated by the first flame port 1531 is suitable for stabilizing the flame of the second flame port 1621. Specifically, the second flame port 1621 ejects air blast and gas, and the inventors have found that, although sufficient combustion of the gas can be achieved by the air blast, the air blast causes the gas ejected by the second flame port 1621 to have a large flow rate, and the speed of the gas leaving the second flame port 1621 is greater than the combustion speed of the gas, which is prone to produce off-flame phenomenon. However, since the first flame port 1531 ejects ejecting air and gas, the ejecting air is naturally induced by the gas ejected by the nozzle and does not need to be generated based on fluid machinery, and the speed of the gas leaving the first flame port 1531 is not much different from the combustion speed of the gas, which can achieve stable combustion, that is, the flame formed by the first flame port 1531 is stable. Since the flame formed by the first flame port 1531 is more stable, the flame generated by the first flame port 1531 can be used to stabilize the flame of the second flame port 1621.

[0183] That is, in addition to being able to heat the cookware, the first flame port 1531 also functions as a flame stabilizing hole / slot. In summary, since the first flame port 1531 ejects ejecting air and gas, the gas ejected by the first flame port 1531 has a more stable combustion state. By adjusting the position, angle, or distance between the first flame port 1531 and the second flame port 1621, the flame formed by the first flame port 1531 ignites the gas ejected by the second flame port 1621 (for example, the flame formed by the first flame port 1531 heats the root of the gas ejected by the second flame port 1621 to ignite the gas ejected by the second flame port 1621), and the gas that quickly leaves the second flame port 1621 is ignited by the flame formed by the first flame port 1531. In this way, the gas that quickly leaves the second flame port 1621 is burned at the second flame port 1621, thereby suppressing the occurrence of off-flame phenomenon of the second flame port 1621, stabilizing the flame of the second flame port 1621, and further improving the combustion efficiency.

[0184] In combination with FIG. 18, in some embodiments, the first flame port 1531 and the second flame port 1621 are arranged in a common wall, and the thickness of the wall between the first flame port 1531 and the second flame port 1621 is not greater than 6 mm, for example, the thickness of the wall between the first flame port 1531 and the second flame port 1621 is 0.2 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, or 6 mm. By such arrangement, the first flame port 1531 and the second flame port 1621 are as close as possible, further improving the flame stabilizing effect of the flame generated by the first flame port 1531 on the second flame port 1621.

[0185] In combination with FIGS. 21-24, in some embodiments, the combustor 100 includes a first gas outlet passage 1500, an end of the first gas outlet passage 1500 constituting a first gas outlet port 1531, and the first gas outlet passage 1500 is provided with at least one first corner 1540, the first corner 1540 being arranged upstream of the first gas outlet port 1531, and the gas transported along the first gas outlet passage 1500 needs to flow through the first corner 1540 before being sprayed out of the first gas outlet port 1531, the arrangement of the first corner 1540 is conducive to further uniform mixing of the gas and to the reduction of the speed of the gas, improving the uniformity and stability of the gas sprayed out of the first gas outlet port 1531.

[0186] For example, the first gas outlet passage 1500 includes a first upstream flow section 1510, a first midstream flow section 1520, and a first downstream flow section 1530, the first upstream flow section 1510 intersects the first midstream flow section 1520 to form the first corner 1540, the first midstream flow section 1520 intersects the first downstream flow section 1530 to form the first corner 1540, and an end of the first downstream flow section 1530 constitutes the first gas outlet port 1531. Specifically, the gas entering the interior of the combustor 100 flows along the first gas outlet passage 1500 and is finally discharged from the first gas outlet port 1531, the first upstream flow section 1510 is upstream of the first midstream flow section 1520, the first midstream flow section 1520 is upstream of the first downstream flow section 1530, and the gas flows through the first upstream flow section 1510, the first midstream flow section 1520, and the first downstream flow section 1530 in sequence and is finally discharged from the first gas outlet port 1531. In this embodiment, the first upstream flow section 1510 intersects the first midstream flow section 1520 to form the first corner 1540, the gas needs to turn when flowing from the first upstream flow section 1510 to the first midstream flow section 1520, the first midstream flow section 1520 intersects the first downstream flow section 1530 to form the first corner 1540, and the gas also needs to turn when flowing from the first midstream flow section 1520 to the first downstream flow section 1530, which is conducive to further uniform mixing of the gas and to the reduction of the speed of the gas, improving the uniformity and stability of the gas sprayed out of the first gas outlet port 1531.

[0187] In combination with FIGS. 21-24, in some embodiments, the combustor 100 includes a second gas outlet passage 1600, an end of the second gas outlet passage 1600 constituting a second gas outlet port 1621, and the second gas outlet passage 1600 is provided with at least one second corner 1630, the second corner 1630 being arranged upstream of the second gas outlet port 1621, and the gas transported along the second gas outlet passage 1600 needs to flow through the second corner 1630 before being sprayed out of the second gas outlet port 1621, the arrangement of the second corner 1630 is conducive to further uniform mixing of the gas and to the reduction of the speed of the gas, improving the uniformity and stability of the gas sprayed out of the second gas outlet port 1621.

[0188] For example, the second gas outlet passage 1600 comprises a second upstream flow section 1610 and a second downstream flow section 1620, the second upstream flow section 1610 and the second downstream flow section 1620 intersect to form a second corner 1630, and the end of the second downstream flow section 1620 constitutes a second outlet port 1621. Specifically, the gas entering the interior of the burner 100 flows along the second gas outlet passage 1600 and is finally discharged from the second outlet port 1621, the second upstream flow section 1610 is located upstream of the second downstream flow section 1620, and the gas flows through the second upstream flow section 1610 and the second downstream flow section 1620 in turn and is finally discharged from the second outlet port 1621. In this embodiment, the second upstream flow section 1610 and the second downstream flow section 1620 intersect to form a second corner 1630, and the gas needs to turn when flowing from the second upstream flow section 1610 to the second downstream flow section 1620, which is conducive to further mixing and uniformity of the gas and to reducing the speed of the gas, thereby improving the uniformity and stability of the gas ejected from the second outlet port 1621.

[0189] Continuing to refer to FIGS. 21-24, in some embodiments, the first gas outlet passage 1500 comprises a first downstream flow section 1530, the end of the first downstream flow section 1530 constitutes a first outlet port 1531, and the first downstream flow section 1530 is inclined from bottom to top away from the center of the burner 100. In this embodiment, the orientation is with reference to the installation of the gas stove in the use environment, and the side of the gas stove facing the ground is the bottom, and the side away from the ground is the top. The first downstream flow section 1530 is thus arranged to enable the flame formed by the first outlet port 1531 to achieve a wide range of heating of the cookware. Similarly, the second gas outlet passage 1600 comprises a second downstream flow section 1620, the end of the second downstream flow section 1620 constitutes a second outlet port 1621, and the second downstream flow section 1620 is inclined from bottom to top away from the center of the burner 100, so that the flame formed by the second outlet port 1621 can achieve a wide range of heating of the cookware.

[0190] Referring to FIGS. 25-27, in some embodiments, the first downstream flow section 1530 of the first gas outlet passage 1500 is inclined from bottom to top toward the center of the burner 100, and the second downstream flow section 1620 of the second gas outlet passage 1600 is inclined from bottom to top toward the center of the burner 100. Since the third outlet port 1430 is closer to the center of the burner 100 than the first outlet port 1531 and the second outlet port 1621, the first downstream flow section 1530 and the second downstream flow section 1620 are thus arranged to facilitate the transmission of fire between the first outlet port 1531, the second outlet port 1621, and the third outlet port 1430.

[0191] In combination with FIGS. 15-20, in some embodiments, the burner 100 includes a burner head 2000 and a fire cap 1000, the fire cap 1000 being disposed on the burner head 2000 so as to jointly enclose an interior space with the burner head 2000, the fire cap 1000 being provided with a first fire outlet 1531, a second fire outlet 1621 and a third fire outlet 1430, the first fire outlet 1531 being in communication with the interior space, the second fire outlet 1621 being in communication with the interior space, and the third fire outlet 1430 being in communication with the interior space.

[0192] For example, the burner head 2000 is provided with a first cavity 2410, a second cavity 2420 and a third cavity 2430, the fire cap 1000 being disposed on the burner head 2000 so as to enclose the first cavity 2410, the second cavity 2420 and the third cavity 2430 respectively, the first fire outlet 1531 being in communication with the first cavity 2410, the injection air and the fuel gas being introduced into the first cavity 2410 and being ejected through the first fire outlet 1531, the second fire outlet 1621 being in communication with the second cavity 2420, the blast air and the fuel gas being introduced into the second cavity 2420 and being ejected through the second fire outlet 1621, and the third fire outlet 1430 being in communication with the third cavity 2430, the injection air and the fuel gas being introduced into the third cavity 2430 and being ejected through the third fire outlet 1430.

[0193] It can be understood that, since the first fire outlet 1531 and the third fire outlet 1430 are both used for ejecting the injection air and the fuel gas, the first cavity 2410 and the third cavity 2430 can be designed to be in communication on the burner head 2000, the injection air and the fuel gas can be introduced into the first cavity 2410 first and then into the third cavity 2430, and finally be ejected from the first fire outlet 1531 and the third fire outlet 1430, or the injection air and the fuel gas can be introduced into the third cavity 2430 first and then into the first cavity 2410, and finally be ejected from the first fire outlet 1531 and the third fire outlet 1430.

[0194] Since the end of the first gas outlet channel 1500 constitutes the first fire outlet 1531 and the end of the second gas outlet channel 1600 constitutes the second fire outlet 1621, the fire cap 1000 can be provided with the first gas outlet channel 1500 and the second gas outlet channel 1600.

[0195] In combination with FIG. 19 and FIG. 20, in some embodiments, the burner 100 further comprises a first draft tube 3100, a second draft tube 3200 and a third draft tube 3300, the first draft tube 3100 is in communication with the first cavity 2410, and the first draft tube 3100 is used to receive draft air and fuel gas, the second draft tube 3200 is in communication with the second cavity 2420, and the second draft tube 3200 is used to receive blast air and fuel gas, the third draft tube 3300 is in communication with the third cavity 2430, and the third draft tube 3300 is used to receive draft air and fuel gas.

[0196] Specifically, the first draft tube 3100 has a Venturi structure, the first draft tube 3100 is connected with the burner head 2000 so that the first draft tube 3100 is in communication with the first cavity 2410, the gas inlet end 3110 of the first draft tube 3100 is matched with a nozzle, the nozzle sprays fuel gas towards the gas inlet end 3110 of the first draft tube 3100, at the same time, negative pressure is formed around the environment to draft air, the draft air and the fuel gas are transported to the first cavity 2410 for mixing, and finally sprayed out of the first fire port 1531.

[0197] The second draft tube 3200 has a Venturi structure, the second draft tube 3200 is connected with the burner head 2000 so that the second draft tube 3200 is in communication with the second cavity 2420, the gas inlet end 3210 of the second draft tube 3200 is matched with a nozzle, the nozzle sprays fuel gas towards the gas inlet end 3210 of the second draft tube 3200, at the same time, blast air enters the gas inlet end 3210 of the second draft tube 3200, for example, by forced blast air through the fan 4000, the blast air and the fuel gas are transported to the second cavity 2420 for mixing, and finally sprayed out of the second fire port 1621, the fan 4000 can be fixedly connected with the second draft tube 3200, which is more convenient for the cooperation of the fan 4000 and the gas inlet end 3210 of the second draft tube 3200.

[0198] The third draft tube 3300 has a Venturi structure, the third draft tube 3300 is connected with the burner head 2000 so that the third draft tube 3300 is in communication with the third cavity 2430, the gas inlet end 3310 of the third draft tube 3300 is matched with a nozzle, the nozzle sprays fuel gas towards the gas inlet end 3310 of the third draft tube 3300, at the same time, negative pressure is formed around the environment to draft air, the draft air and the fuel gas are transported to the third cavity 2430 for mixing, and finally sprayed out of the third fire port 1430.

[0199] By supplying gas through the first draft tube 3100, the second draft tube 3200 and the third draft tube 3300 respectively, when in the minimum fire, only the third fire port 1430 can form a flame.

[0200] In combination with FIG. 17 and FIG. 18, in some embodiments, the fire cover 1000 comprises an outer fire cover 1100, an inner fire cover 1200, and a middle fire cover 1300. The outer fire cover 1100 is provided with a first fire outlet 1531 and a second fire outlet 1621. The inner fire cover 1200 is provided with a third fire outlet 1430. The outer fire cover 1100 surrounds the inner fire cover 1200. The middle fire cover 1300 blocks the space between the outer fire cover 1100 and the inner fire cover 1200.

[0201] Specifically, the outer fire cover 1100 is provided with the first fire outlet 1531 and the second fire outlet 1621, so that the outer fire cover 1100 can form an outer ring fire. The inner fire cover 1200 is provided with the third fire outlet 1430, so that the inner fire cover 1200 can form an inner ring fire. The so-called outer fire cover 1100 is the part of the structure close to or located at the outer side of the fire cover 1000. Correspondingly, the inner fire cover 1200 is the part of the structure close to or located at the center of the fire cover 1000. Thus, the outer fire cover 1100 surrounds the inner fire cover 1200 and is at a certain distance from the inner fire cover 1200, so that the outer ring fire is at a certain distance from the inner ring fire, thereby increasing the fire outlet range. In order to avoid the space between the outer fire cover 1100 and the inner fire cover 1200 being exposed and accumulating dirt, the middle fire cover 1300 is provided to block the space between the outer fire cover 1100 and the inner fire cover 1200. The so-called blocking means that in the direction from top to bottom, the space between the outer fire cover 1100 and the inner fire cover 1200 can no longer be seen, so that residual debris and dirt can be prevented from entering between the outer fire cover 1100 and the inner fire cover 1200. It can be understood that, since the middle fire cover 1300 blocks the space between the outer fire cover 1100 and the inner fire cover 1200, the middle fire cover 1300 circumscribes the outer fire cover 1100 and inscribes the inner fire cover 1200, so that in the direction from the inner fire cover 1200 to the outer fire cover 1100, the top surface of the fire cover 1000 is a solid structure. As shown in FIG. 15, the top surface of the fire cover 1000 is almost a solid structure except for the first fire outlet 1531, the second fire outlet 1621, and the third fire outlet 1430, so that the overall strength of the fire cover 1000 is stronger, and the fire cover 1000 is easier to clean and maintain.

[0202] It can be understood that the middle fire cover 1300 can be a separately prepared component, can be integrally formed with at least part of the outer fire cover 1100, or can be integrally formed with at least part of the inner fire cover 1200.

[0203] In some embodiments, the inner fire cover 1200 is fixedly connected with the middle fire cover 1300, so that the inner fire cover 1200 and the middle fire cover 1300 form an independent module and can be simultaneously disassembled. For example, the middle fire cover 1300 includes a first cover body 1310 and a second cover body 1320. The first cover body 1310 extends along the vertical direction and surrounds the inner fire cover 1200. The first cover body 1310 is fixedly connected with the inner fire cover 1200. The second cover body 1320 is arranged on the top of the first cover body 1310 and extends towards the outer fire cover 1100 to shield the space between the outer fire cover 1100 and the inner fire cover 1200.

[0204] In some embodiments, the inner fire cover 1200 is arranged at the center of the burner 100, i.e., the flame generated by the inner fire cover 1200 is at the center of the fire outlet range, so that the gas stove is more conducive to cooking in the minimum fire state. For example, the inner fire cover 1200 covers the center of the burner 100.

[0205] Further, the inner fire cover 1200 is a porous ceramic plate. The porous structure causes the inner fire cover 1200 to form a plurality of third fire outlets 1430. By designing the inner fire cover 1200 as a porous ceramic plate, the inner fire cover 1200 forms an infrared combustion (constitutes an infrared combustion fire cover), which is conducive to achieving minimum fire combustion and has small fire hole thermal intensity, can achieve full premix combustion, reduces the need for secondary air, and even does not need to supplement secondary air (i.e., does not need to absorb ambient air or does not need the excess oxygen gas sprayed by the second fire outlet 1621). For example, the porous ceramic plate is mainly prepared by infrared ceramic material.

[0206] In some embodiments, the top surface of the middle fire cover 1300 is designed as a plane. Since the middle fire cover 1300 shields the space between the outer fire cover 1100 and the inner fire cover 1200, when the top surface of the middle fire cover 1300 is a plane, the integrality of the fire cover 1000 is further improved, and the middle fire cover 1300 is easier to clean. In particular, when the top surface of the middle fire cover 1300 constitutes the top surface of the fire cover 1000, the user's wiping action is smoother and is not easily hindered when wiping the top surface of the fire cover 1000. For example, the top surface of the middle fire cover 1300 in FIG. 15 is a horizontal plane.

[0207] Further, along the radial direction of the burner 100, the middle fire cover 1300 is adapted to be abutted by the inner wall of the outer fire cover 1100. Generally, the middle fire cover 1300 is supported by the burner head 2000 in the direction of gravity. By being abutted by the inner wall of the outer fire cover 1100 along the radial direction of the burner 100, the middle fire cover 1300 is limited in two directions and is more stable. It can be understood that when the gas stove is in a use environment, the up-down direction is the axial direction, the direction of gravity is along the axial direction from top to bottom, and the radial direction is perpendicular to the axial direction.

[0208] As shown in FIGS. 15-18, in some embodiments, the outer fire cover 1100 includes a first fire cover 1110, a second fire cover 1120, and a third fire cover 1130, the first fire cover 1110 surrounds the second fire cover 1120, and a first fire outlet 1531 is formed between the first fire cover 1110 and the second fire cover 1120, the second fire cover 1120 surrounds the third fire cover 1130, and a second fire outlet 1621 is formed between the second fire cover 1120 and the third fire cover 1130, the middle fire cover 1300 is arranged between the third fire cover 1130 and the inner fire cover 1200 to shield the space between the outer fire cover 1100 and the inner fire cover 1200, so that the first fire outlet 1531, the second fire outlet 1621, and the third fire outlet 1430 are arranged in sequence from outside to inside.

[0209] It can be understood that the middle fire cover 1300 and the outer fire cover 1100 can be separate components, or at least part of the middle fire cover 1300 and the outer fire cover 1100 can be integrally formed, and the middle fire cover 1300 and the inner fire cover 1200 can be separate components, or at least part of the middle fire cover 1300 and the inner fire cover 1200 can be integrally formed. For example, as shown in FIGS. 15-18, the middle fire cover 1300, the outer fire cover 1100, and the inner fire cover 1200 are separate components and are assembled together, as shown in FIGS. 28-30, the middle fire cover 1300 and the third fire cover 1130 are integrally formed (i.e., the same component includes the middle fire cover 1300 and the third fire cover 1130), and the middle fire cover 1300 and the inner fire cover 1200 are separate components.

[0210] In some embodiments, the number of the first fire outlets 1531 is multiple, which means two or more, i.e., the number of the first fire outlets 1531 is at least two, and the multiple first fire outlets 1531 are arranged in a ring shape, for example, the multiple first fire outlets 1531 are arranged in a ring shape along the circumference of the burner 100, and the circumference can be understood as the direction around the center of the burner 100, the multiple first fire outlets 1531 can spray gas to generate a flame, which can achieve large-scale heating of the cooker. In addition to the above, as shown in FIGS. 17 and 18, in some embodiments, the first fire outlet 1531 is in a ring slit shape, and the ring slit-shaped first fire outlet 1531 can also achieve large-scale heating of the cooker.

[0211] In some embodiments, the number of the second fire outlets 1621 is multiple, which means two or more, i.e., the number of the second fire outlets 1621 is at least two, and the multiple second fire outlets 1621 are arranged in an annular and interlaced manner, for example, the multiple second fire outlets 1621 are arranged in an annular and interlaced manner along the circumference of the burner 100, and the circumference can be understood as the direction around the center of the burner 100, and the multiple second fire outlets 1621 can spray gas to generate a flame, which can achieve large-scale heating of the cooker. In addition to the above, as shown in FIGS. 17 and 18, in some embodiments, the second fire outlet 1621 is in the form of an annular slit, and the annular slit-shaped second fire outlet 1621 can also achieve large-scale heating of the cooker, and when the second fire outlet 1621 is designed in the form of an annular slit, the second fire outlet 1621 is continuous along the circumference of the burner 100, so that the excess oxygen in the gas sprayed by the second fire outlet 1621 can increase the contact with the gas sprayed by the first fire outlet 1531 or the third fire outlet 1430, further improving the oxygen supplement effect.

[0212] In combination with FIGS. 17 and 18, in some embodiments, the number of the third fire outlets 1430 is multiple, which means two or more, i.e., the number of the third fire outlets 1430 is at least two, and the multiple third fire outlets 1430 are arranged in an annular and interlaced manner or densely arranged. In addition to the above, in some embodiments, the third fire outlet 1430 is in the form of an annular slit.

[0213] Since the first fire outlet 1531 is away from the center of the burner 100 relative to the second fire outlet 1621, when the first fire outlet 1531 includes multiple and is arranged in an annular manner, the multiple first fire outlets 1531 surround the second fire outlet 1621 (which can be multiple or in the form of an annular slit), and when the first fire outlet 1531 is in the form of an annular slit, the annular slit-shaped first fire outlet 1531 surrounds the second fire outlet 1621 (which can be multiple or in the form of an annular slit). Since the second fire outlet 1621 is away from the center of the burner 100 relative to the third fire outlet 1430, when the second fire outlet 1621 includes multiple and is arranged in an annular manner, the multiple second fire outlets 1621 surround the third fire outlet 1430 (which can be multiple or in the form of an annular slit), and when the second fire outlet 1621 is in the form of an annular slit, the annular slit-shaped second fire outlet 1621 surrounds the third fire outlet 1430 (which can be multiple or in the form of an annular slit).

[0214] The embodiments of the present application also disclose a gas stove, which comprises the above-mentioned burner 100, and the burner 100 comprises a first fire outlet 1531, a second fire outlet 1621 and a third fire outlet 1430, the first fire outlet 1531 is used for spraying jet air and gas, the second fire outlet 1621 is used for spraying blast air and gas, the third fire outlet 1430 is used for spraying jet air and gas, the second fire outlet 1621 is close to the center of the burner 100 relative to the first fire outlet 1531, and the third fire outlet 1430 is close to the center of the burner 100 relative to the second fire outlet 1621.

[0215] The second fire outlet 1621 is used for spraying blast air and gas, the blast air provides sufficient oxygen so that the gas sprayed from the second fire outlet 1621 can be fully combusted, the first fire outlet 1531 is used for spraying jet air and gas, the third fire outlet 1430 is used for spraying jet air and gas, the second fire outlet 1621 is arranged between the first fire outlet 1531 and the third fire outlet 1430, when the flame generated by the first fire outlet 1531 needs secondary air, the excess oxygen generated by the blast air can be used to provide the secondary air, when the flame generated by the third fire outlet 1430 needs secondary air, the excess oxygen generated by the blast air can also be used to provide the secondary air, by such an arrangement, finally, the gas sprayed from the first fire outlet 1531, the second fire outlet 1621 and the third fire outlet 1430 can be fully combusted, the combustion efficiency is high, and the thermal efficiency of the gas stove is improved.

[0216] In some embodiments, the gas stove comprises a valve body (not shown in the figure), the valve body is used for adjusting the amount of gas, when the valve body interrupts the gas supply of the second fire outlet 1621, the valve body can keep the gas supply of the first fire outlet 1531 and / or the third fire outlet 1430, and at this time, the fan 4000 is also in the working state.

[0217] Specifically, the valve body is a device for regulating the flow of gas, the inlet of the valve body is connected to the gas pipeline, the outlet of the valve body is connected to the nozzle, and the gas flow to the first fire port 1531, the second fire port 1621 and the third fire port 1430 is regulated by the regulating action of the valve body. The specific structure of the valve body can be referred to the related art, which will not be described in detail here. When the regulating valve is adjusted to interrupt the gas supply of the second fire port 1621, the gas to the first fire port 1531 and / or the third fire port 1430 can still be maintained, and at this time the fan 4000 is also in working condition, so that the air forced by the fan 4000 (blast air) is supplemented to the gas jetted out of the first fire port 1531 and / or the third fire port 1430 through the second fire port 1621. It can be understood that the fan 4000 can be started synchronously when the gas stove is ignited, and the fan 4000 remains in the running state regardless of the adjustment of the valve body, and the fan 4000 is closed only when the gas stove is extinguished. Of course, other control logics can also be used, which will not be described here.

[0218] The embodiment of the present application also discloses an integrated electric appliance, which comprises the gas stove of the above-mentioned embodiment. The so-called integrated electric appliance is a device integrating a gas stove and another conventional electric appliance function, for example, at least one of a microwave oven, an oven, a steamer and a smoke machine can be integrated with the gas stove to form an integrated electric appliance. Of course, the integrated electric appliance is not limited to the above-mentioned electric appliances, as long as the integrated electric appliance can realize more functions than the single gas stove. It can be understood that the gas stove of the integrated electric appliance of the embodiment adopts the technical solution of the above-mentioned embodiment, and therefore has at least the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be repeated here.

Claims

1. A burner (100), wherein The burner (100) comprises: a first outlet port (1531); and a second outlet port (1621), the first outlet port (1531) being away from the center of the burner (100) relative to the second outlet port (1621), one of the first outlet port (1531) and the second outlet port (1621) being adapted for the ejection of fuel gas and blast air, the other of the first outlet port (1531) and the second outlet port (1621) being adapted for the ejection of fuel gas and injection air.

2. The burner (100) of claim 1, wherein The flame generated by the other of the first outlet port (1531) and the second outlet port (1621) is adapted to stabilize the flame of the one of the first outlet port (1531) and the second outlet port (1621).

3. Burner (100) according to claim 1 or 2, wherein The burner (100) comprises a first gas outlet channel (1500), the end of the first gas outlet channel (1500) constituting the first outlet port (1531), the first gas outlet channel (1500) being provided with at least one first corner (1540) upstream of the first outlet port (1531).

4. The burner (100) of claim 3, wherein The first gas outlet channel (1500) comprises a first upstream flow section (1510), a first midstream flow section (1520) and a first downstream flow section (1530), the end of the first downstream flow section (1530) constituting the first outlet port (1531), the first upstream flow section (1510) and the first midstream flow section (1520) intersecting to form the first corner (1540), the first midstream flow section (1520) and the first downstream flow section (1530) intersecting to form the first corner (1540).

5. The burner (100) according to claim 4, characterized in that The first downstream flow section (1530) is inclined away from the center of the burner (100) from the first midstream flow section (1520).

6. Burner (100) according to any one of claims 1-5, wherein The burner (100) comprises a second gas outlet channel (1600), the end of the second gas outlet channel (1600) constituting the second outlet port (1621), the second gas outlet channel (1600) being provided with at least one second corner (1630) upstream of the second outlet port (1621).

7. The burner (100) of claim 6, wherein The second gas outlet channel (1600) comprises a second upstream flow section (1610) and a second downstream flow section (1620), the end of the second downstream flow section (1620) constituting the second outlet port (1621), the second upstream flow section (1610) and the second downstream flow section (1620) intersecting to form the second corner (1630).

8. The burner (100) according to claim 7, characterized in that The second downstream flow section (1620) is inclined away from the center of the burner (100) from the second upstream flow section (1610).

9. Burner (100) according to any one of claims 1-8, wherein The first outlet port (1531) is in the form of an annular slit and surrounds the second outlet port (1621); and / or, the second outlet port (1621) is in the form of an annular slit.

10. Burner (100) according to any one of claims 1-8, wherein The burner (100) comprises a plurality of the first outlet ports (1531), the plurality of the first outlet ports (1531) being arranged in an annular pattern and surrounding the second outlet port (1621); And / or, the burner (100) comprises a plurality of the second fire outlets (1621), and the plurality of the second fire outlets (1621) are arranged in an annular interlaced manner.

11. Burner (100) according to any one of claims 1-10, wherein The burner (100) comprises a burner head (2000) and a fire cover (1000) arranged on the burner head (2000), the burner head (2000) is provided with a first cavity (2410) and a second cavity (2420), the fire cover (1000) comprises a first fire cover (1110), a second fire cover (1120) and a third fire cover (1130), the first fire cover (1110) surrounds the second fire cover (1120) and is provided with the first fire outlet (1531) communicated with the first cavity (2410) between the first fire cover (1110) and the second fire cover (1120), the second fire cover (1120) surrounds the third fire cover (1130) and is provided with the second fire outlet (1621) communicated with the second cavity (2420) between the second fire cover (1120) and the third fire cover (1130).

12. The burner (100) of claim 11, wherein The first fire cover (1110) and the second fire cover (1120) are provided with a first gas outlet channel (1500), and the second fire cover (1120) and the third fire cover (1130) are provided with a second gas outlet channel (1600).

13. Burner (100) according to claim 11 or 12, characterized in that The burner head (2000) comprises a first ring wall (2100), a second ring wall (2200) and a third ring wall (2300), the first ring wall (2100) surrounds the second ring wall (2200) and is provided with the first cavity (2410) between the first ring wall (2100) and the second ring wall (2200), the second ring wall (2200) surrounds the third ring wall (2300) and is provided with the second cavity (2420) between the second ring wall (2200) and the third ring wall (2300), the first fire cover (1110) is annular and placed on the first ring wall (2100), the second fire cover (1120) is annular and placed on the second ring wall (2200), and the third fire cover (1130) is annular and placed on the third ring wall (2300).

14. Burner (100) according to any one of claims 11-13, wherein The burner (100) comprises a first draft tube (3100) and a second draft tube (3200), the first draft tube (3100) is connected with the burner head (2000) and communicated with the first cavity (2410), the second draft tube (3200) is connected with the burner head (2000) and communicated with the second cavity (2420), one of the gas inlet end (3110) of the first draft tube (3100) and the gas inlet end (3210) of the second draft tube (3200) is adapted to receive fuel gas and blast air, and the other of the gas inlet end (3110) of the first draft tube (3100) and the gas inlet end (3210) of the second draft tube (3200) is adapted to receive fuel gas and draft air.

15. The burner (100) according to claim 14, characterized in that The burner (100) comprises a fan (4000) adapted to provide blast air, and the fan (4000) is connected and fixed with the first draft tube (3100) or the second draft tube (3200).

16. The combustor (100) of any one of claims 1-8, wherein, The first fire outlet (1531) is adapted for the ejection of fuel gas and injection air; The second fire outlet (1621) is adapted for the ejection of fuel gas and blast air; and The burner (100) further comprises a third fire outlet (1430) adapted for the ejection of fuel gas and injection air, and the third fire outlet (1430) is close to the center of the burner (100) relative to the second fire outlet (1621).

17. The burner (100) according to claim 16, characterized in that The first fire outlet (1531) and the second fire outlet (1621) are co-walled, and the thickness of the wall between the first fire outlet (1531) and the second fire outlet (1621) is not greater than 6mm.

18. Burner (100) according to claim 16 or 17, wherein The burner (100) comprises a burner head (2000) and a fire cover (1000) provided on the burner head (2000), and the fire cover (1000) is provided with the first fire outlet (1531), the second fire outlet (1621) and the third fire outlet (1430).

19. The burner (100) according to claim 18, characterized in that The fire cover (1000) comprises: An outer fire cover (1100) provided with the first fire outlet (1531) and the second fire outlet (1621); An inner fire cover (1200) provided with the third fire outlet (1430), and the inner fire cover (1200) is surrounded by the outer fire cover (1100); and A middle fire cover (1300) shielding the space between the outer fire cover (1100) and the inner fire cover (1200).

20. The burner (100) according to claim 19, characterized in that The inner fire cover (1200) and the middle fire cover (1300) are connected and fixed; And / or, the inner fire cover (1200) is provided at the center of the burner (100); And / or, the inner fire cover (1200) is a porous ceramic plate.

21. Burner (100) according to claim 19 or 20, characterized in that The top surface of the middle fire cover (1300) is a plane; And / or, the top surface of the middle fire cover (1300) constitutes the top surface of the fire cover (1000); And / or, the middle fire cover (1300) is adapted to be abutted by the inner wall of the outer fire cover (1100) along the radial direction of the burner (100).

22. Burner (100) according to any one of claims 19-21, characterized in that The outer fire cover (1100) comprises a first fire cover (1110), a second fire cover (1120) and a third fire cover (1130), the first fire cover (1110) surrounds the second fire cover (1120) and the first fire outlet (531) is provided between the first fire cover (1110) and the second fire cover (1120), the second fire cover (1120) surrounds the third fire cover (1130) and the second fire outlet (1621) is provided between the second fire cover (1120) and the third fire cover (1130), and the middle fire cover (1300) is provided between the third fire cover (1130) and the inner fire cover (1200) to shield the space between the outer fire cover (1100) and the inner fire cover (1200).

23. The burner (100) according to claim 22, characterized in that The middle fire cover (1300) and the third fire cover (1130) are integrally formed.

24. Burner (100) according to any one of claims 18-23, characterized in that The furnace head (2000) is provided with a first cavity (2410), a second cavity (2420) and a third cavity (2430), the first outlet (1531) and the first cavity (2410) are communicated, the second outlet (1621) and the second cavity (2420) are communicated, and the third outlet (1430) and the third cavity (2430) are communicated; The burner (100) further comprises a first ejector pipe (3100), a second ejector pipe (3200) and a third ejector pipe (3300), the first ejector pipe (3100) is communicated with the first cavity (2410) and is adapted to receive fuel gas and eject air, the second ejector pipe (3200) is communicated with the second cavity (2420) and is adapted to receive fuel gas and blast air, and the third ejector pipe (3300) is communicated with the third cavity (2430) and is adapted to receive fuel gas and eject air.

25. Burner (100) according to any one of claims 16 to 24, characterized in that The number of the first outlets (1531) is multiple, and the multiple first outlets (1531) are arranged in an annular manner and surround the second outlet (1621); And / or, the number of the second outlets (1621) is multiple, and the multiple second outlets (1621) are arranged in an annular manner and surround the third outlet (1430); And / or, the number of the third outlets (1430) is multiple.

26. Burner (100) according to claims 16-24, characterized in that The first outlet (1531) is in the form of an annular slit and surrounds the second outlet (1621); And / or, the second outlet (1621) is in the form of an annular slit and surrounds the third outlet (1430); And / or, the third outlet (1430) is in the form of an annular slit.

27. A gas hob, wherein The gas stove comprises the burner (100) according to any one of claims 1 to 26.

28. The gas hob of claim 27, wherein The gas stove comprises a valve body adapted to adjust the amount of fuel gas, when the valve body interrupts the supply of fuel gas to one of the first outlet (1531) and the second outlet (1621), the valve body is adapted to maintain the supply of fuel gas to the other of the first outlet (1531) and the second outlet (1621), and the fan (4000) of the gas stove is in a working state to provide blast air.

29. The gas hob according to claim 28, wherein When the valve body interrupts the supply of fuel gas to the second outlet (1621), the valve body is adapted to maintain the supply of fuel gas to the first outlet (1531) and / or the third outlet (1430), and the fan (4000) of the gas stove is in a working state to provide blast air.

30. An integrated appliance, wherein, The integrated electrical appliance comprises the gas stove according to any one of claims 27 to 29.

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